Drug interactions
Amobarbital + Estradiol
Severity: Moderate
Amobarbital and Estradiol: moderate interaction.
Last updated
For healthcare professionals — reference only. This page is a brief summary, not medical advice and not a substitute for official labeling or clinical judgement. Always verify before prescribing or dispensing.
Summary
Enzyme-inducing barbiturates can speed estradiol metabolism and reduce its levels. This may cause loss of symptom control, breakthrough bleeding, or reduced endometrial protection.
What this interaction means in plain words
Amobarbital and Estradiol can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken.
Amobarbital belongs to Central Nervous System; Estradiol belongs to Endocrine.
Why it happens
Barbiturate induction of CYP3A4 increases hepatic metabolism of estradiol.
What to do
Monitor for recurrence of menopausal symptoms or abnormal bleeding and increase the estrogen dose if needed.
What to ask your pharmacist
- Should I take them at different times of day?
- Does the dose of either medicine need to change?
- Is there anything I should avoid, such as alcohol or certain foods, while on both?
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Other interactions of Amobarbital
- Amobarbital + Calcium / magnesium / potassium / sodium oxybates Contraindicated
- Amobarbital + Doravirine Contraindicated
- Amobarbital + Elbasvir / grazoprevir Contraindicated
- Amobarbital + Isavuconazonium Contraindicated
- Amobarbital + Isocarboxazid Contraindicated
- Amobarbital + Lonafarnib Contraindicated
Other interactions of Estradiol
- Anastrozole + Estradiol Contraindicated
- Estradiol + Fezolinetant Contraindicated
- Estradiol + Ospemifene Contraindicated
- Antithrombin alfa + Estradiol Major
- Antithrombin iii + Estradiol Major
- Estradiol + Exemestane Major
Frequently asked questions
Can I take Amobarbital with Estradiol?
MediHelp rates the interaction as moderate. Amobarbital and Estradiol can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken. Enzyme-inducing barbiturates can speed estradiol metabolism and reduce its levels. This may cause loss of symptom control, breakthrough bleeding, or reduced endometrial protection.
How serious is the interaction between Amobarbital and Estradiol?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor for recurrence of menopausal symptoms or abnormal bleeding and increase the estrogen dose if needed.
What other medicines interact with Amobarbital?
MediHelp also lists interactions of Amobarbital with, for example, Calcium / magnesium / potassium / sodium oxybates, Doravirine, Elbasvir / grazoprevir. The full list is on the Amobarbital page.
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