Interações medicamentosas
Anastrozole + Desogestrel-ethinyl estradiol
Gravidade: Grave
Anastrozole and Desogestrel-ethinyl estradiol: major interaction.
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Resumo
Anastrozole works by lowering estrogen levels, and exogenous estrogen such as ethinyl estradiol opposes this effect. The combination undermines the therapeutic aim in hormone-receptor-positive breast cancer, and anastrozole is not intended for use in premenopausal women who might need contraception.
O que esta interação significa em palavras simples
Anastrozole 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.
Anastrozole belongs to Oncology; Desogestrel-ethinyl estradiol belongs to Endocrine.
Por que acontece
Pharmacodynamic antagonism: exogenous estrogen counteracts aromatase inhibition-induced estrogen suppression.
O que fazer
Avoid combined estrogen-containing products in patients taking anastrozole; use a non-hormonal contraceptive if contraception is needed.
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
- Apalutamide + Desogestrel-ethinyl estradiol Grave
- Atazanavir + Desogestrel-ethinyl estradiol Grave
- Belzutifan + Desogestrel-ethinyl estradiol Grave
Outras interações de Anastrozole
- Anastrozole + Bazedoxifene / conjugated estrogens Contraindicada
- Anastrozole + Bazedoxifene-conjugated estrogens Contraindicada
- Anastrozole + Conjugated estrogens Contraindicada
- Anastrozole + Estradiol Contraindicada
- Anastrozole + Estrogens conjugated synthetic Contraindicada
- Anastrozole + Estrogens esterified Contraindicada
Perguntas frequentes
Can I take Anastrozole with Desogestrel-ethinyl estradiol?
MediHelp rates the interaction as major. Anastrozole 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. Anastrozole works by lowering estrogen levels, and exogenous estrogen such as ethinyl estradiol opposes this effect. The combination undermines the therapeutic aim in hormone-receptor-positive breast cancer, and anastrozole is not intended for use in premenopausal women who might need contraception.
How serious is the interaction between Anastrozole 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: Avoid combined estrogen-containing products in patients taking anastrozole; use a non-hormonal contraceptive if contraception is needed.
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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