Drug interactions
Amobarbital + Progesterone intravaginal
Severity: Moderate
Amobarbital and Progesterone intravaginal: 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
Amobarbital is an inducer of hepatic and intestinal CYP3A4 and may lower progesterone exposure. Reduced progesterone effect could compromise luteal support or endometrial protection, although vaginal delivery reduces first-pass metabolism.
What this interaction means in plain words
Amobarbital and Progesterone intravaginal 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.
Why it happens
Barbiturate-mediated induction of CYP3A4 increases progesterone metabolism.
What to do
Monitor for loss of progesterone effect such as breakthrough bleeding or inadequate luteal support. Consider a higher progesterone dose or a non-inducing sedative alternative.
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
Frequently asked questions
Can I take Amobarbital with Progesterone intravaginal?
MediHelp rates the interaction as moderate. Amobarbital and Progesterone intravaginal 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 is an inducer of hepatic and intestinal CYP3A4 and may lower progesterone exposure. Reduced progesterone effect could compromise luteal support or endometrial protection, although vaginal delivery reduces first-pass metabolism.
How serious is the interaction between Amobarbital and Progesterone intravaginal?
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 loss of progesterone effect such as breakthrough bleeding or inadequate luteal support. Consider a higher progesterone dose or a non-inducing sedative alternative.
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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