Interações medicamentosas
Atazanavir + Desogestrel-ethinyl estradiol
Gravidade: Grave
Atazanavir and Desogestrel-ethinyl estradiol: major interaction.
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Resumo
Atazanavir alters ethinyl estradiol exposure, and when boosted with ritonavir can reduce it, while progestin exposure may increase. This may lead to reduced contraceptive reliability, breakthrough bleeding, or progestin-related adverse effects.
O que esta interação significa em palavras simples
Atazanavir and Desogestrel-ethinyl estradiol can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for.
Atazanavir belongs to Anti Virals; Desogestrel-ethinyl estradiol belongs to Endocrine.
Por que acontece
Atazanavir inhibits CYP3A4 and UGT1A1, while ritonavir boosting induces glucuronidation, altering ethinyl estradiol and progestin levels.
O que fazer
Use a contraceptive containing at least 30 mcg ethinyl estradiol with unboosted atazanavir, or choose an alternative or additional non-hormonal method. Avoid products with less than 30 mcg ethinyl estradiol with boosted atazanavir.
O que perguntar ao farmacêutico
- Does the benefit of taking both outweigh the risk in my case?
- Do I need any blood test, ECG or other check while on both?
- What early warning signs should I watch for, and what should I do if they appear?
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Outras interações de Desogestrel-ethinyl estradiol
- Desogestrel-ethinyl estradiol + Fezolinetant Contraindicada
- Aminocaproic acid + Desogestrel-ethinyl estradiol Grave
- Amobarbital + Desogestrel-ethinyl estradiol Grave
- Anastrozole + Desogestrel-ethinyl estradiol Grave
- Apalutamide + Desogestrel-ethinyl estradiol Grave
- Belzutifan + Desogestrel-ethinyl estradiol Grave
Outras interações de Atazanavir
- Alfuzosin + Atazanavir Contraindicada
- Atazanavir + Avanafil Contraindicada
- Atazanavir + Dronedarone Contraindicada
- Atazanavir + Eletriptan Contraindicada
- Atazanavir + Eplerenone Contraindicada
- Atazanavir + Ergotamine Contraindicada
Perguntas frequentes
Can I take Atazanavir with Desogestrel-ethinyl estradiol?
MediHelp rates the interaction as major. Atazanavir and Desogestrel-ethinyl estradiol can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for. Atazanavir alters ethinyl estradiol exposure, and when boosted with ritonavir can reduce it, while progestin exposure may increase. This may lead to reduced contraceptive reliability, breakthrough bleeding, or progestin-related adverse effects.
How serious is the interaction between Atazanavir and Desogestrel-ethinyl estradiol?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Use a contraceptive containing at least 30 mcg ethinyl estradiol with unboosted atazanavir, or choose an alternative or additional non-hormonal method. Avoid products with less than 30 mcg ethinyl estradiol with boosted atazanavir.
What other medicines interact with Desogestrel-ethinyl estradiol?
MediHelp also lists interactions of Desogestrel-ethinyl estradiol with, for example, Fezolinetant, Aminocaproic acid, Amobarbital. The full list is on the Desogestrel-ethinyl estradiol page.
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