Ein Paarvergleich findet Originalpassagen, die den anderen Wirkstoff wörtlich nennen. Aussagen gelten für das jeweilige Präparat und seine Formulierung. Klassenbegriffe und abweichende Synonyme können fehlen. Kein Treffer bedeutet nicht, dass keine Wechselwirkung besteht.
RxNorm 05-Oct-2026 · geprüft 2026-10-25 · 1009 Präparate · 54812 Quellenpassagen · 148 strukturierte Aussagen. Automatisch aktualisiert, ohne menschliche Freigabe.
Wechselwirkungen · Norvir
Norvir 100 mg powder for oral suspension · Abschnitt 4.5 · PDF-Seite 10–11
HOS-086179 · Präparat HOS-083284
Medicinal Product Interactions – Ritonavir with Protease Inhibitors
Co-administered Dose of Co- Dose of Medicinal Product AUC Cmin
Medicinal Product administered NORVIR Assessed
Medicinal (mg)
Product
(mg)
Atazanavir 300 q24h 100 q24h Atazanavir ↑ 86% ↑ 11 fold
1
Atazanavir ↑ 2 fold ↑ 3-7 fold
Ritonavir increases the serum levels of atazanavir as a result of CYP3A4 inhibition.
Clinical trials confirmed the safety and efficacy of 300 mg atazanavir once daily with
ritonavir 100 mg once daily in treatment experienced patients. For further information,
physicians should refer to the SmPC for atazanavir.
Darunavir 600, single 100 q12h Darunavir ↑ 14 fold
Ritonavir increases the serum levels of darunavir as a result of CYP3A inhibition.
Darunavir must be given with ritonavir to ensure its therapeutic effect. Ritonavir doses
higher than 100 mg twice daily have not been studied with darunavir. For further
information, refer to the SmPC for darunavir.
Fosamprenavir 700 q12h 100 q12h Amprenavir ↑ 2.4 ↑ 11 fold
fold
Ritonavir increases the serum levels of amprenavir (from fosamprenavir) as a result of
CYP3A4 inhibition. Fosamprenavir must be given with ritonavir to ensure its therapeutic
effect. Clinical trials confirmed the safety and efficacy of fosamprenavir 700 mg twice
daily with ritonavir 100 mg twice daily. Ritonavir doses higher than 100 mg twice daily
10
have not been studied with fosamprenavir. For further information, physicians should refer
to the SmPC for fosamprenavir.
Indinavir 800 100 q12h Indinavir2 ↑ 178% ND
q12h
Ritonavir ↑ 72% ND
Ritonavir increases the serum levels of indinavir as a result of CYP3A4 inhibition.
Appropriate doses for this combination, with respect to efficacy and safety, have not been
established. Minimal benefit of ritonavir-mediated pharmacokinetic enhancement is
achieved with doses higher than 100 mg twice daily. In cases of co-administration of
ritonavir (100 mg twice daily) and indinavir (800 mg twice daily) caution is warranted as
the risk of nephrolithiasis may be increased.
Nelfinavir 1250 100 q12h Nelfinavir ↑ ND
q12h 20to39%
Ritonavir increases the serum levels of nelfinavir as a result of CYP3A4 inhibition.
Appropriate doses for this combination, with respect to efficacy and safety, have not been
established. Minimal benefit of ritonavir-mediated pharmacokinetic enhancement is
achieved with doses higher than 100 mg twice daily.
Tipranavir 500 200 q12h Tipranavir ↑ 11 fold ↑ 29 fold
q12h
Ritonavir ↓ 40% ND
Ritonavir increases the serum levels of tipranavir as a result of CYP3A inhibition.
Tipranavir must be given with low dose ritonavir to ensure its therapeutic effect. Doses of
ritonavir less than 200 mg twice daily should not be used with tipranavir as they might alter
the efficacy of the combination. For further information, physicians should refer to the
SmPC for tipranavir.
ND: Not determined.
1. Based on cross-study comparison to 400 mg atazanavir once daily alone.
2. Based on cross-study comparison to 800 mg indinavir three times daily alone.
Originalpassage; keine automatisch abgeleitete Schwere, Häufigkeit oder Kausalität. Auch verneinte Befunde und nicht untersuchte Kombinationen bleiben sichtbar.
RxNorm-Namen im Text (wörtliche Treffer, Rolle nicht bewertet): indinavir (HOS-084518) atazanavir (HOS-086180) nelfinavir (HOS-084520) protease (HOS-085623) amprenavir (HOS-086183) darunavir (HOS-086181) fosamprenavir (HOS-086182) tipranavir (HOS-086184)
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Version 2025-11-11T18:35:00Z · SHA-256 82413695e61cf39577e85c47e382ee60197570a4ae72fe81d6e24e4211cd2d43 · Passage 03a194213ac89748c50cfb4b51554f8455df8df904ff2077009223828e61e82e · Zeichen 2655–7456 im Abschnitt
Wechselwirkungen · Norvir
Norvir 100 mg film-coated tablets · Abschnitt 4.5 · PDF-Seite 43
HOS-086399 · Präparat HOS-083284
Co- Dose of Co- Dose of Medicinal Product AUC Cmin
administered administered NORVIR Assessed
Medicinal Medicinal Product (mg)
Product (mg)
Atazanavir 300 q24h 100 q24h Atazanavir ↑ 86% ↑ 11 fold
1
Atazanavir ↑ 2 fold ↑ 3-7
fold
Ritonavir increases the serum levels of atazanavir as a result of CYP3A4 inhibition. Clinical
trials confirmed the safety and efficacy of 300 mg atazanavir once daily with ritonavir 100 mg
once daily in treatment experienced patients. For further information, physicians should refer
to the SmPC for atazanavir.
Darunavir 600, single 100 q12h Darunavir ↑ 14 fold
Ritonavir increases the serum levels of darunavir as a result of CYP3A inhibition. Darunavir
must be given with ritonavir to ensure its therapeutic effect. Ritonavir doses higher than
100 mg twice daily have not been studied with darunavir. For further information, refer to the
SmPC for darunavir.
Fosamprenavir 700 q12h 100 q12h Amprenavir ↑ 2.4 ↑ 11 fold
fold
Ritonavir increases the serum levels of amprenavir (from fosamprenavir) as a result of
CYP3A4 inhibition. Fosamprenavir must be given with ritonavir to ensure its therapeutic
effect. Clinical trials confirmed the safety and efficacy of fosamprenavir 700 mg twice daily
with ritonavir 100 mg twice daily. Ritonavir doses higher than 100 mg twice daily have not
been studied with fosamprenavir. For further information, physicians should refer to the
SmPC for fosamprenavir.
Indinavir 800 q12h 100 q12h Indinavir2 ↑ 178% ND
Ritonavir ↑ 72% ND
Ritonavir increases the serum levels of indinavir as a result of CYP3A4 inhibition.
Appropriate doses for this combination, with respect to efficacy and safety, have not been
established. Minimal benefit of ritonavir-mediated pharmacokinetic enhancement is achieved
with doses higher than 100 mg twice daily. In cases of co-administration of ritonavir (100 mg
twice daily) and indinavir (800 mg twice daily) caution is warranted as the risk of
nephrolithiasis may be increased.
Nelfinavir 1250 q12h 100 q12h Nelfinavir ↑ ND
20to39%
Ritonavir increases the serum levels of nelfinavir as a result of CYP3A4 inhibition.
Appropriate doses for this combination, with respect to efficacy and safety, have not been
established. Minimal benefit of ritonavir-mediated pharmacokinetic enhancement is achieved
with doses higher than 100 mg twice daily.
Tipranavir 500 q12h 200 Tipranavir ↑ 11 fold ↑ 29 fold
q12h
Ritonavir ↓ 40% ND
Ritonavir increases the serum levels of tipranavir as a result of CYP3A inhibition. Tipranavir
must be given with low dose ritonavir to ensure its therapeutic effect. Doses of ritonavir less
than 200 mg twice daily should not be used with tipranavir as they might alter the efficacy of
the combination. For further information, physicians should refer to the SmPC for tipranavir.
ND: Not determined.
Originalpassage; keine automatisch abgeleitete Schwere, Häufigkeit oder Kausalität. Auch verneinte Befunde und nicht untersuchte Kombinationen bleiben sichtbar.
RxNorm-Namen im Text (wörtliche Treffer, Rolle nicht bewertet): indinavir (HOS-084518) atazanavir (HOS-086180) nelfinavir (HOS-084520) amprenavir (HOS-086183) darunavir (HOS-086181) fosamprenavir (HOS-086182) tipranavir (HOS-086184)
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Version 2025-11-11T18:35:00Z · SHA-256 82413695e61cf39577e85c47e382ee60197570a4ae72fe81d6e24e4211cd2d43 · Passage d5308747ba178c6ebd0e34322c465d7122d5458d70aff134d17f324382a8fc16 · Zeichen 2732–7211 im Abschnitt
Wechselwirkungen · Viramune
Viramune 200 mg tablets · Abschnitt 4.5 · PDF-Seite 10
HOS-088096 · Präparat HOS-083615
Fosamprenavir Amprenavir AUC 0.67 It is not recommended to co-
1 400 mg BID (0.55-0.80) administer fosamprenavir and
Amprenavir Cmin 0.65 Viramune if fosamprenavir is not
(0.49-0.85) co-administered with ritonavir (see
Amprenavir Cmax 0.75 section 4.4).
(0.63-0.89)
Originalpassage; keine automatisch abgeleitete Schwere, Häufigkeit oder Kausalität. Auch verneinte Befunde und nicht untersuchte Kombinationen bleiben sichtbar.
RxNorm-Namen im Text (wörtliche Treffer, Rolle nicht bewertet): amprenavir (HOS-086183) fosamprenavir (HOS-086182) ritonavir (HOS-084521)
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Version 2026-04-07T09:26:00Z · SHA-256 3124c3838448e2e235ceba5ac8568ac2aa499d31c735f56f78ff4d70c1cb2cc3 · Passage 4aa0db0ef4f3341ed440468fc01b765e9c7d5f0af16ee8980cfb5f148a9b0f43 · Zeichen 7414–7889 im Abschnitt
Wechselwirkungen · Viramune
Viramune 200 mg tablets · Abschnitt 4.5 · PDF-Seite 10–11
HOS-088098 · Präparat HOS-083615
10
Fosamprenavir/ritonavir Amprenavir AUC 0.89 Fosamprenavir/ritonavir and
700/100 mg BID (0.77-1.03) Viramune can be co-administered
Amprenavir Cmin 0.81 without dose adjustments
(0.69-0.96)
Amprenavir Cmax 0.97
(0.85-1.10)
Originalpassage; keine automatisch abgeleitete Schwere, Häufigkeit oder Kausalität. Auch verneinte Befunde und nicht untersuchte Kombinationen bleiben sichtbar.
RxNorm-Namen im Text (wörtliche Treffer, Rolle nicht bewertet): amprenavir (HOS-086183) fosamprenavir (HOS-086182) ritonavir (HOS-084521)
Vollständigen Kontext in der EMA-Fachinformation lesen →Quellennachweis
Version 2026-04-07T09:26:00Z · SHA-256 3124c3838448e2e235ceba5ac8568ac2aa499d31c735f56f78ff4d70c1cb2cc3 · Passage bfbfe45b93be9ebc394b0c89703ec2150b377802a50f01edc1848f3669c47163 · Zeichen 8135–8528 im Abschnitt
Wechselwirkungen · Viramune
Viramune 50 mg/5 mL oral suspension · Abschnitt 4.5 · PDF-Seite 35
HOS-088194 · Präparat HOS-083615
Fosamprenavir Amprenavir AUC 0.67 It is not recommended to co-
1 400 mg BID (0.55-0.80) administer fosamprenavir and
Amprenavir Cmin 0.65 Viramune if fosamprenavir is not
(0.49-0.85) co-administered with ritonavir (see
Amprenavir Cmax 0.75 section 4.4).
(0.63-0.89)
Originalpassage; keine automatisch abgeleitete Schwere, Häufigkeit oder Kausalität. Auch verneinte Befunde und nicht untersuchte Kombinationen bleiben sichtbar.
RxNorm-Namen im Text (wörtliche Treffer, Rolle nicht bewertet): amprenavir (HOS-086183) fosamprenavir (HOS-086182) ritonavir (HOS-084521)
Vollständigen Kontext in der EMA-Fachinformation lesen →Quellennachweis
Version 2026-04-07T09:26:00Z · SHA-256 3124c3838448e2e235ceba5ac8568ac2aa499d31c735f56f78ff4d70c1cb2cc3 · Passage 59ea8b49e42286e13a7691b99227f96872e505beb808469fa50ae61f3e922b7f · Zeichen 7648–8129 im Abschnitt
Wechselwirkungen · Viramune
Viramune 50 mg/5 mL oral suspension · Abschnitt 4.5 · PDF-Seite 35
HOS-088196 · Präparat HOS-083615
Fosamprenavir/ritonavir Amprenavir AUC 0.89 Fosamprenavir/ritonavir and
700/100 mg BID (0.77-1.03) Viramune can be co-administered
Amprenavir Cmin 0.81 without dose adjustments
(0.69-0.96)
Amprenavir Cmax 0.97
(0.85-1.10)
Originalpassage; keine automatisch abgeleitete Schwere, Häufigkeit oder Kausalität. Auch verneinte Befunde und nicht untersuchte Kombinationen bleiben sichtbar.
RxNorm-Namen im Text (wörtliche Treffer, Rolle nicht bewertet): amprenavir (HOS-086183) fosamprenavir (HOS-086182) ritonavir (HOS-084521)
Vollständigen Kontext in der EMA-Fachinformation lesen →Quellennachweis
Version 2026-04-07T09:26:00Z · SHA-256 3124c3838448e2e235ceba5ac8568ac2aa499d31c735f56f78ff4d70c1cb2cc3 · Passage dcefb192fd504181f1f7f7800988cdba35010eae61fe5df1e2b48750e4e05cad · Zeichen 8332–8718 im Abschnitt
Wechselwirkungen · Viramune
Viramune 400 mg prolonged-release tablets · Abschnitt 4.5 · PDF-Seite 60
HOS-088288 · Präparat HOS-083615
Fosamprenavir Amprenavir AUC 0.67 It is not recommended to co-
1 400 mg BID (0.55-0.80) administer fosamprenavir and
Amprenavir Cmin 0.65 Viramune if fosamprenavir is not
(0.49-0.85) co-administered with ritonavir (see
Amprenavir Cmax 0.75 section 4.4).
(0.63-0.89)
Originalpassage; keine automatisch abgeleitete Schwere, Häufigkeit oder Kausalität. Auch verneinte Befunde und nicht untersuchte Kombinationen bleiben sichtbar.
RxNorm-Namen im Text (wörtliche Treffer, Rolle nicht bewertet): amprenavir (HOS-086183) fosamprenavir (HOS-086182) ritonavir (HOS-084521)
Vollständigen Kontext in der EMA-Fachinformation lesen →Quellennachweis
Version 2026-04-07T09:26:00Z · SHA-256 3124c3838448e2e235ceba5ac8568ac2aa499d31c735f56f78ff4d70c1cb2cc3 · Passage 4aa0db0ef4f3341ed440468fc01b765e9c7d5f0af16ee8980cfb5f148a9b0f43 · Zeichen 7734–8209 im Abschnitt
Wechselwirkungen · Viramune
Viramune 400 mg prolonged-release tablets · Abschnitt 4.5 · PDF-Seite 60–61
HOS-088290 · Präparat HOS-083615
60
Fosamprenavir/ritonavir Amprenavir AUC 0.89 Fosamprenavir/ritonavir and
700/100 mg BID (0.77-1.03) Viramune can be co-administered
Amprenavir Cmin 0.81 without dose adjustments
(0.69-0.96)
Amprenavir Cmax 0.97
(0.85-1.10)
Originalpassage; keine automatisch abgeleitete Schwere, Häufigkeit oder Kausalität. Auch verneinte Befunde und nicht untersuchte Kombinationen bleiben sichtbar.
RxNorm-Namen im Text (wörtliche Treffer, Rolle nicht bewertet): amprenavir (HOS-086183) fosamprenavir (HOS-086182) ritonavir (HOS-084521)
Vollständigen Kontext in der EMA-Fachinformation lesen →Quellennachweis
Version 2026-04-07T09:26:00Z · SHA-256 3124c3838448e2e235ceba5ac8568ac2aa499d31c735f56f78ff4d70c1cb2cc3 · Passage 60f84f87a6d621df1cb81c6e63ab92965edd2defc29d2327752934a5e86cc0c3 · Zeichen 8455–8848 im Abschnitt
Wechselwirkungen · Kaletra
Kaletra (80 mg + 20 mg) / ml oral solution · Abschnitt 4.5 · PDF-Seite 12
HOS-108852 · Präparat HOS-093083
(inhibition of CYP3A enzymes)
HIV CCR5 – antagonist
Maraviroc Maraviroc: The dose of maraviroc should be
AUC: ↑ 295% decreased to 150 mg twice daily
Cmax: ↑ 97% during co-administration with
Due to CYP3A inhibition by Kaletra 400/100 mg twice daily.
lopinavir/ritonavir.
Integrase inhibitor
Raltegravir Raltegravir: No dose adjustment necessary
AUC: ↔
Cmax: ↔
C12: ↓ 30%
Lopinavir: ↔
Co-administration with other HIV protease inhibitors (PIs)
According to current treatment guidelines, dual therapy with protease inhibitors is generally not
recommended.
Fosamprenavir/ ritonavir Fosamprenavir: Co-administration of increased
(700/100 mg BID) Amprenavir concentrations are doses of fosamprenavir (1400 mg
significantly reduced. BID) with Kaletra oral solution
(Lopinavir/ritonavir (533/133 mg BID) to protease
400/100 mg BID) inhibitor-experienced patients
resulted in a higher incidence of
or gastrointestinal adverse events and
elevations in triglycerides with the
Fosamprenavir (1400 mg combination regimen without
BID) increases in virological efficacy,
when compared with standard
(Lopinavir/ritonavir doses of fosamprenavir/ritonavir.
533/133 mg BID) Concomitant administration of
these medicinal products is not
recommended.
Tipranavir/ritonavir Lopinavir: Concomitant administration of
(500/100 mg BID) AUC: ↓ 55% these medicinal products is not
Cmin: ↓ 70% recommended.
Cmax: ↓ 47%
Acid reducing agents
Omeprazole (40 mg QD) Omeprazole: ↔ No dose adjustment necessary
Originalpassage; keine automatisch abgeleitete Schwere, Häufigkeit oder Kausalität. Auch verneinte Befunde und nicht untersuchte Kombinationen bleiben sichtbar.
RxNorm-Namen im Text (wörtliche Treffer, Rolle nicht bewertet): protease (HOS-085623) maraviroc (HOS-086186) amprenavir (HOS-086183) raltegravir (HOS-086187) fosamprenavir (HOS-086182) tipranavir (HOS-086184) omeprazole (HOS-085912)
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Version 2025-12-02T16:00:00Z · SHA-256 441d9e5f9e4b42d645e4bd802abc892cef6574b0be5b3f18d2a96678774ae365 · Passage 0b87fdd109f79a80601e3c574f5e18fed07b1789a2ca7f01d2eafaba29d23dc3 · Zeichen 4995–7833 im Abschnitt
Wechselwirkungen · Kaletra
Kaletra 200 mg/50 mg film-coated tablets · Abschnitt 4.5 · PDF-Seite 48
HOS-109004 · Präparat HOS-093083
(inhibition of CYP3A enzymes)
HIV CCR5 – antagonist
Maraviroc Maraviroc: The dose of maraviroc should be
AUC: ↑ 295% decreased to 150 mg twice daily
Cmax: ↑ 97% during co-administration with Kaletra
Due to CYP3A inhibition by 400/100 mg twice daily.
lopinavir/ritonavir.
Integrase inhibitor
Raltegravir Raltegravir: No dose adjustment necessary
AUC: ↔
Cmax: ↔
C12: ↓ 30%
Lopinavir: ↔
Co-administration with other HIV protease inhibitors (PIs)
According to current treatment guidelines, dual therapy with protease inhibitors is generally not
recommended.
Fosamprenavir/ Fosamprenavir: Co-administration of increased doses
ritonavir (700/100 mg Amprenavir concentrations are of fosamprenavir (1400 mg BID)
BID) significantly reduced. with Kaletra oral solution
(533/133 mg BID) to protease
inhibitor-experienced patients
Originalpassage; keine automatisch abgeleitete Schwere, Häufigkeit oder Kausalität. Auch verneinte Befunde und nicht untersuchte Kombinationen bleiben sichtbar.
RxNorm-Namen im Text (wörtliche Treffer, Rolle nicht bewertet): protease (HOS-085623) maraviroc (HOS-086186) amprenavir (HOS-086183) raltegravir (HOS-086187) fosamprenavir (HOS-086182)
Vollständigen Kontext in der EMA-Fachinformation lesen →Quellennachweis
Version 2025-12-02T16:00:00Z · SHA-256 441d9e5f9e4b42d645e4bd802abc892cef6574b0be5b3f18d2a96678774ae365 · Passage f782d1ab1c57001581096637b1440b57b3cb9dd3d00bfd730e7f8085e3a57bae · Zeichen 5188–6569 im Abschnitt
Wechselwirkungen · Kaletra
Kaletra 200 mg/50 mg film-coated tablets · Abschnitt 4.5 · PDF-Seite 48–49
HOS-109005 · Präparat HOS-093083
48
(Lopinavir/ritonavir resulted in a higher incidence of
400/100 mg BID) gastrointestinal adverse events and
elevations in triglycerides with the
or combination regimen without
increases in virological efficacy,
Fosamprenavir when compared with standard doses
(1400 mg BID) of fosamprenavir/ritonavir.
Concomitant administration of these
(Lopinavir/ritonavir medicinal products is not
533/133 mg BID) recommended.
Kaletra must not be administered
once daily in combination with
amprenavir.
Tipranavir/ritonavir Lopinavir: Concomitant administration of these
(500/100 mg BID) AUC: ↓ 55% medicinal products is not
Cmin: ↓ 70% recommended.
Cmax: ↓ 47%
Acid reducing agents
Omeprazole (40 mg Omeprazole: ↔ No dose adjustment necessary
QD)
Lopinavir: ↔
Ranitidine (150 mg Ranitidine: ↔ No dose adjustment necessary
single dose)
Alpha1 adrenoreceptor antagonist
Alfuzosin Alfuzosin: Concomitant administration of
Due to CYP3A inhibition by Kaletra and alfuzosin is contra-
lopinavir/ritonavir, concentrations indicated (see section 4.3) as
of alfuzosin are expected to alfuzosin-related toxicity, including
increase. hypotension, may be increased.
Analgesics
Fentanyl Fentanyl: Careful monitoring of adverse effects
Increased risk of side-effects (notably respiratory depression but
(respiratory depression, sedation) also sedation) is recommended when
due to higher plasma fentanyl is concomitantly
concentrations because of administered with Kaletra.
CYP3A4 inhibition by
lopinavir/ritonavir.
Antianginal
Ranolazine Due to CYP3A inhibition by The concomitant administration of
lopinavir/ritonavir, concentrations Kaletra and ranolazine is
of ranolazine are expected to contraindicated (see section 4.3).
increase.
Originalpassage; keine automatisch abgeleitete Schwere, Häufigkeit oder Kausalität. Auch verneinte Befunde und nicht untersuchte Kombinationen bleiben sichtbar.
RxNorm-Namen im Text (wörtliche Treffer, Rolle nicht bewertet): alfuzosin (HOS-086139) amprenavir (HOS-086183) ranitidine (HOS-085660) fentanyl (HOS-086196) fosamprenavir (HOS-086182) ranolazine (HOS-086141) tipranavir (HOS-086184) omeprazole (HOS-085912)
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Version 2025-12-02T16:00:00Z · SHA-256 441d9e5f9e4b42d645e4bd802abc892cef6574b0be5b3f18d2a96678774ae365 · Passage 36be30eaedda7aebc321ed321c96a33a8b5f0e47dfdc414ad4d6358ff3954c0c · Zeichen 6614–9803 im Abschnitt
Wechselwirkungen · Kaletra
Kaletra 100 mg/25 mg film-coated tablets · Abschnitt 4.5 · PDF-Seite 83–84
HOS-109078 · Präparat HOS-093083
83
Maraviroc Maraviroc: The dose of maraviroc should be
AUC: ↑ 295% decreased to 150 mg twice daily
Cmax: ↑ 97% during co-administration with
Due to CYP3A inhibition by Kaletra 400/100 mg twice daily.
lopinavir/ritonavir.
Integrase inhibitor
Raltegravir Raltegravir: No dose adjustment necessary
AUC: ↔
Cmax: ↔
C12: ↓ 30%
Lopinavir: ↔
Co-administration with other HIV protease inhibitors (PIs)
According to current treatment guidelines, dual therapy with protease inhibitors is generally not
recommended.
Fosamprenavir/ Fosamprenavir: Co-administration of increased
ritonavir (700/100 mg Amprenavir concentrations are doses of fosamprenavir (1400 mg
BID) significantly reduced. BID) with Kaletra oral solution
(533/133 mg BID) to protease
(Lopinavir/ritonavir inhibitor-experienced patients
400/100 mg BID) resulted in a higher incidence of
gastrointestinal adverse events and
or elevations in triglycerides with the
combination regimen without
Fosamprenavir increases in virological efficacy,
(1400 mg BID) when compared with standard doses
of fosamprenavir/ritonavir.
(Lopinavir/ritonavir Concomitant administration of these
533/133 mg BID) medicinal products is not
recommended.
Kaletra must not be administered
once daily in combination with
amprenavir.
Tipranavir/ritonavir Lopinavir: Concomitant administration of these
(500/100 mg BID) AUC: ↓ 55% medicinal products is not
Cmin: ↓ 70% recommended.
Cmax: ↓ 47%
Acid reducing agents
Omeprazole (40 mg Omeprazole: ↔ No dose adjustment necessary
QD)
Lopinavir: ↔
Ranitidine (150 mg Ranitidine: ↔ No dose adjustment necessary
single dose)
Alpha1 adrenoreceptor antagonist
Alfuzosin Alfuzosin: Concomitant administration of
Due to CYP3A inhibition by Kaletra and alfuzosin is contra-
lopinavir/ritonavir, concentrations indicated (see section 4.3) as
of alfuzosin are expected to alfuzosin-related toxicity, including
increase. hypotension, may be increased.
Originalpassage; keine automatisch abgeleitete Schwere, Häufigkeit oder Kausalität. Auch verneinte Befunde und nicht untersuchte Kombinationen bleiben sichtbar.
RxNorm-Namen im Text (wörtliche Treffer, Rolle nicht bewertet): alfuzosin (HOS-086139) protease (HOS-085623) maraviroc (HOS-086186) amprenavir (HOS-086183) ranitidine (HOS-085660) raltegravir (HOS-086187) fosamprenavir (HOS-086182) tipranavir (HOS-086184) omeprazole (HOS-085912)
Vollständigen Kontext in der EMA-Fachinformation lesen →Quellennachweis
Version 2025-12-02T16:00:00Z · SHA-256 441d9e5f9e4b42d645e4bd802abc892cef6574b0be5b3f18d2a96678774ae365 · Passage 262bfc7747e8af6a0bc31322576cc9f33731bdf23847197000d08285e923bde2 · Zeichen 5337–8975 im Abschnitt
Wechselwirkungen · Vfend
VFEND 50 mg film-coated tablets VFEND 200 mg film-coated tablets · Abschnitt 4.5 · PDF-Seite 13
HOS-109463 · Präparat HOS-093201
Low dose (100 mg BID)* Ritonavir Cmax 25% Coadministration of voriconazole
Ritonavir AUC 13% and low-dose ritonavir (100 mg
Voriconazole Cmax 24% BID) should be avoided unless
an assessment of the benefit/risk
Voriconazole AUC 39%
to the patient justifies the use of
voriconazole.
Other HIV Protease Inhibitors Not studied clinically. In vitro Careful monitoring for any
(including but not limited to: studies show that voriconazole may occurrence of drug toxicity
saquinavir, amprenavir and inhibit the metabolism of HIV and/or lack of efficacy, and dose
nelfinavir)* protease inhibitors and the adjustment may be needed.
[CYP3A4 substrates and metabolism of voriconazole may
inhibitors] also be inhibited by HIV protease
inhibitors.
Originalpassage; keine automatisch abgeleitete Schwere, Häufigkeit oder Kausalität. Auch verneinte Befunde und nicht untersuchte Kombinationen bleiben sichtbar.
RxNorm-Namen im Text (wörtliche Treffer, Rolle nicht bewertet): nelfinavir (HOS-084520) protease (HOS-085623) saquinavir (HOS-084522) amprenavir (HOS-086183) ritonavir (HOS-084521)
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Version 2026-07-21T15:15:00Z · SHA-256 e91b23f050e51d641bef6be84ca7a49bb0e71d249b5c23f29243dda478d37eaf · Passage 81b452654b014e91adf502a06508cfe5e46ea829e59260fa77bcc7896d35f33b · Zeichen 15356–16561 im Abschnitt
Wechselwirkungen · Vfend
VFEND 200 mg powder for solution for infusion · Abschnitt 4.5 · PDF-Seite 45
HOS-109542 · Präparat HOS-093201
Low dose (100 mg BID)* Ritonavir Cmax 25% Coadministration of voriconazole
Ritonavir AUC 13% and low-dose ritonavir (100 mg
Voriconazole Cmax 24% BID) should be avoided unless
an assessment of the benefit/risk
Voriconazole AUC 39%
to the patient justifies the use of
voriconazole.
Other HIV Protease Inhibitors Not studied clinically. In vitro Careful monitoring for any
(including but not limited to: studies show that voriconazole may occurrence of drug toxicity
saquinavir, amprenavir and inhibit the metabolism of HIV and/or lack of efficacy, and dose
nelfinavir)* protease inhibitors and the adjustment may be needed.
[CYP3A4 substrates and metabolism of voriconazole may
inhibitors] also be inhibited by HIV protease
inhibitors.
Efavirenz (a non-nucleoside
reverse transcriptase inhibitor,
(NNRTI)) [CYP450 inducer;
CYP3A4 inhibitor and
substrate]
Efavirenz Cmax 38% Use of standard doses of
Efavirenz 400 mg QD, Efavirenz AUC 44% voriconazole with efavirenz
coadministered with Voriconazole Cmax 61% doses of 400 mg QD or higher is
voriconazole 200 mg BID* Voriconazole AUC 77% contraindicated (see section
4.3).
Originalpassage; keine automatisch abgeleitete Schwere, Häufigkeit oder Kausalität. Auch verneinte Befunde und nicht untersuchte Kombinationen bleiben sichtbar.
RxNorm-Namen im Text (wörtliche Treffer, Rolle nicht bewertet): nelfinavir (HOS-084520) protease (HOS-085623) saquinavir (HOS-084522) amprenavir (HOS-086183) efavirenz (HOS-087947) ritonavir (HOS-084521)
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Version 2026-07-21T15:15:00Z · SHA-256 e91b23f050e51d641bef6be84ca7a49bb0e71d249b5c23f29243dda478d37eaf · Passage 0f766ad319d00482dae4f7644313c8278be71bfe0e23dffa63c5e8445c8c01eb · Zeichen 15763–17590 im Abschnitt
Wechselwirkungen · Vfend
VFEND 40 mg/ml powder for oral suspension · Abschnitt 4.5 · PDF-Seite 77
HOS-109606 · Präparat HOS-093201
Low dose (100 mg BID)* Ritonavir Cmax 25% Coadministration of voriconazole
Ritonavir AUC 13% and low-dose ritonavir (100 mg
Voriconazole Cmax 24% BID) should be avoided unless
an assessment of the benefit/risk
Voriconazole AUC 39%
to the patient justifies the use of
voriconazole.
Other HIV Protease Inhibitors Not studied clinically. In vitro Careful monitoring for any
(including but not limited to: studies show that voriconazole may occurrence of drug toxicity
saquinavir, amprenavir and inhibit the metabolism of HIV and/or lack of efficacy, and dose
nelfinavir)* protease inhibitors and the adjustment may be needed.
[CYP3A4 substrates and metabolism of voriconazole may
inhibitors] also be inhibited by HIV protease
inhibitors.
Originalpassage; keine automatisch abgeleitete Schwere, Häufigkeit oder Kausalität. Auch verneinte Befunde und nicht untersuchte Kombinationen bleiben sichtbar.
RxNorm-Namen im Text (wörtliche Treffer, Rolle nicht bewertet): nelfinavir (HOS-084520) protease (HOS-085623) saquinavir (HOS-084522) amprenavir (HOS-086183) ritonavir (HOS-084521)
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Version 2026-07-21T15:15:00Z · SHA-256 e91b23f050e51d641bef6be84ca7a49bb0e71d249b5c23f29243dda478d37eaf · Passage 81b452654b014e91adf502a06508cfe5e46ea829e59260fa77bcc7896d35f33b · Zeichen 15388–16593 im Abschnitt
Wechselwirkungen · Aptivus
Aptivus 250 mg soft capsules · Abschnitt 4.5 · PDF-Seite 11
HOS-114814 · Präparat HOS-094169
Concomitant use of
Aptivus/ritonavir caused a
decrease of etravirine exposure
that could significantly impair
the virologic response to
etravirine.
Nevirapine The limited data available from a No dosage adjustment necessary.
No interaction study phase IIa study in HIV-infected
performed patients suggest that no
significant interaction is
expected between nevirapine and
TPV/r. Moreover a study with
TPV/r and another NNRTI
(efavirenz) did not show any
clinically relevant interaction
(see above).
Rilpivirine Concomitant use of rilpivirine Close monitoring for signs of
No interaction study with some ritonavir-boosted rilpivirine toxicity and possibly
performed protease inhibitors has also dose adjustment of rilpivirine
demonstrated an increase in the is recommended when co-
plasma concentrations of administered with
rilpivirine. Aptivus/ritonavir.
Protease inhibitors (PIs)
According to current treatment guidelines, dual therapy with protease inhibitors is generally not
recommended
Amprenavir/ritonavir Amprenavir Cmax ↓ 39% The concomitant use of Aptivus,
600/100 mg BID Amprenavir AUC ↓ 44% co-administered with low dose
Amprenavir Cmin ↓ 55% ritonavir, with
amprenavir/ritonavir is not
The clinical relevance of this recommended.
reduction in amprenavir If the combination is nevertheless
concentrations has not been considered necessary, a
established. monitoring of the plasma levels of
amprenavir is strongly
Mechanism unknown. encouraged (see section 4.4).
Atazanavir/ritonavir Atazanavir Cmax ↓ 57% The concomitant use of Aptivus,
300/100 mg QD Atazanavir AUC ↓ 68% co-administered with low dose
(TPV/r 500/100 mg BID) Atazanavir Cmin ↓ 81% ritonavir, with
atazanavir/ritonavir is not
Mechanism unknown. recommended.
If the co-administration is
Tipranavir Cmax 8% nevertheless considered
Tipranavir AUC 20% necessary, a close monitoring of
Tipranavir Cmin 75% the safety of tipranavir and a
monitoring of plasma
Inhibition of CYP 3A4 by concentrations of atazanavir are
atazanavir/ritonavir and strongly encouraged (see
induction by tipranavir/r. section 4.4).
Originalpassage; keine automatisch abgeleitete Schwere, Häufigkeit oder Kausalität. Auch verneinte Befunde und nicht untersuchte Kombinationen bleiben sichtbar.
RxNorm-Namen im Text (wörtliche Treffer, Rolle nicht bewertet): atazanavir (HOS-086180) protease (HOS-085623) etravirine (HOS-088088) amprenavir (HOS-086183) rilpivirine (HOS-088090) efavirenz (HOS-087947) nevirapine (HOS-088064) ritonavir (HOS-084521)
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Version 2026-04-23T09:35:00Z · SHA-256 1c396190f98e89933229f2261b0e436bd43dac9c1de8e2dacaa36a755dc06dce · Passage 0f93136f565c07762f6fd595573f7b2523cf9549d537511b9eb823e270e5cf53 · Zeichen 9065–12757 im Abschnitt
Wechselwirkungen · Prezista
PREZISTA 100 mg/ml oral suspension · Abschnitt 4.5 · PDF-Seite 24–25
HOS-116434 · Präparat HOS-094447
24
#
Studies have been performed at lower than recommended doses of darunavir or with a different dosing regimen (see
section 4.2 Posology).
†
The efficacy and safety of the use of PREZISTA with 100 mg ritonavir and any other HIV PI (e.g. (fos)amprenavir
and tipranavir) has not been established in HIV patients. According to current treatment guidelines, dual therapy with
protease inhibitors is generally not recommended.
‡
Study was conducted with tenofovir disoproxil fumarate 300 mg once daily.
Originalpassage; keine automatisch abgeleitete Schwere, Häufigkeit oder Kausalität. Auch verneinte Befunde und nicht untersuchte Kombinationen bleiben sichtbar.
RxNorm-Namen im Text (wörtliche Treffer, Rolle nicht bewertet): protease (HOS-085623) amprenavir (HOS-086183) tenofovir disoproxil fumarate (HOS-110471) ritonavir (HOS-084521) tipranavir (HOS-086184)
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Version 2024-07-26T09:44:00Z · SHA-256 457dafbe8b3b9cee45b9ca7b46919ded598e0d0cd16715525d161e54f80b9117 · Passage 39b639411a5674b9266d293c1fa28c7bc34f2a852f4629bb2b419a20505f595a · Zeichen 78543–79082 im Abschnitt
Wechselwirkungen · Prezista
PREZISTA 75 mg film-coated tablets PREZISTA 150 mg film-coated tablets PREZISTA 600 mg film-coated tablets · Abschnitt 4.5 · PDF-Seite 66–67
HOS-116535 · Präparat HOS-094447
66
UROLOGICAL DRUGS
Fesoterodine Not studied. Use with caution. Monitor for
Solifenacin fesoterodine or solifenacin adverse
reactions, dose reduction of
fesoterodine or solifenacin may be
necessary.
#
Studies have been performed at lower than recommended doses of darunavir or with a different dosing regimen (see
section 4.2 Posology).
†
The efficacy and safety of the use of PREZISTA with 100 mg ritonavir and any other HIV PI (e.g. (fos)amprenavir
and tipranavir) has not been established in HIV patients. According to current treatment guidelines, dual therapy with
protease inhibitors is generally not recommended.
‡
Study was conducted with tenofovir disoproxil fumarate 300 mg once daily.
Originalpassage; keine automatisch abgeleitete Schwere, Häufigkeit oder Kausalität. Auch verneinte Befunde und nicht untersuchte Kombinationen bleiben sichtbar.
RxNorm-Namen im Text (wörtliche Treffer, Rolle nicht bewertet): solifenacin (HOS-116433) protease (HOS-085623) amprenavir (HOS-086183) fesoterodine (HOS-116432) tenofovir disoproxil fumarate (HOS-110471) ritonavir (HOS-084521) tipranavir (HOS-086184)
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Version 2024-07-26T09:44:00Z · SHA-256 457dafbe8b3b9cee45b9ca7b46919ded598e0d0cd16715525d161e54f80b9117 · Passage 4a138fc9e1c788e1d7747ba233c9254854c8390d924be8b5ea4eacff3a14e676 · Zeichen 69769–70897 im Abschnitt
Wechselwirkungen · Prezista
PREZISTA 400 mg film-coated tablets PREZISTA 800 mg film-coated tablets · Abschnitt 4.5 · PDF-Seite 106
HOS-116623 · Präparat HOS-094447
Midazolam (oral) Boosted PREZISTA with
Triazolam triazolam or oral midazolam is
contraindicated (see section 4.3).
TREATMENT FOR PREMATURE EJACULATION
Dapoxetine Not studied. Co-administration of boosted
PREZISTA with dapoxetine is
contraindicated.
UROLOGICAL DRUGS
Fesoterodine Not studied. Use with caution. Monitor for
Solifenacin fesoterodine or solifenacin adverse
reactions, dose reduction of
fesoterodine or solifenacin may be
necessary.
#
Studies have been performed at lower than recommended doses of darunavir or with a different dosing regimen (see
section 4.2 Posology).
†
The efficacy and safety of the use of PREZISTA with 100 mg ritonavir and any other HIV PI (e.g. (fos)amprenavir
and tipranavir) has not been established in HIV patients. According to current treatment guidelines, dual therapy with
protease inhibitors is generally not recommended.
‡
Study was conducted with tenofovir disoproxil fumarate 300 mg once daily.
Originalpassage; keine automatisch abgeleitete Schwere, Häufigkeit oder Kausalität. Auch verneinte Befunde und nicht untersuchte Kombinationen bleiben sichtbar.
RxNorm-Namen im Text (wörtliche Treffer, Rolle nicht bewertet): solifenacin (HOS-116433) protease (HOS-085623) amprenavir (HOS-086183) fesoterodine (HOS-116432) tenofovir disoproxil fumarate (HOS-110471) ritonavir (HOS-084521) triazolam (HOS-086168) tipranavir (HOS-086184) midazolam (HOS-086167)
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Version 2024-07-26T09:44:00Z · SHA-256 457dafbe8b3b9cee45b9ca7b46919ded598e0d0cd16715525d161e54f80b9117 · Passage 14ad7ec122e17b6bf0a9b5a35c80cb2b9d577809d7de8d4ecda9d9afbe9bbd5b · Zeichen 77338–79172 im Abschnitt
Wechselwirkungen · Celsentri
CELSENTRI 150 mg film-coated tablets CELSENTRI 300 mg film-coated tablets · Abschnitt 4.5 · PDF-Seite 10
HOS-118462 · Präparat HOS-094825
Fosamprenavir/ritonavir Maraviroc AUC12: ↑ 2.49 Concomitant use is not
700 mg/100 mg BID Maraviroc Cmax: ↑ 1.52 recommended. Significant
(maraviroc 300 mg BID) Maraviroc C12: ↑ 4.74 reductions in amprenavir
Cmin observed may result
Amprenavir AUC12: ↓ 0.65 in virological failure in
Amprenavir Cmax: ↓ 0.66 patients
Amprenavir C12: ↓ 0.64
Originalpassage; keine automatisch abgeleitete Schwere, Häufigkeit oder Kausalität. Auch verneinte Befunde und nicht untersuchte Kombinationen bleiben sichtbar.
RxNorm-Namen im Text (wörtliche Treffer, Rolle nicht bewertet): amprenavir (HOS-086183) fosamprenavir (HOS-086182) ritonavir (HOS-084521)
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Version 2026-01-12T15:51:00Z · SHA-256 af7f0c7bbfd6e612d5a885c59ba9795f11ee85b00c3e0504de2a206af5fbec72 · Passage 1db1f8ce99132149e5de7ca4def48df5a8c75d3e98f57af9b3690710f0048433 · Zeichen 11233–11810 im Abschnitt
This product uses publicly available data from the U.S. National Library of Medicine (NLM), National Institutes of Health, Department of Health and Human Services; NLM is not responsible for the product and does not endorse or recommend this or any other product.