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Progesterone and Amoxicillin Interaction

Drug interaction information between Progesterone and Amoxicillin.

Progesterone and Amoxicillin have a documented minor interaction in FDA labeling.

FDA drug labeling documents a minor-severity interaction between Progesterone and Amoxicillin. Major interactions are generally avoided, moderate ones may need monitoring or a dose adjustment, and minor ones are usually low-risk. This page shows the documented mechanism and guidance. Label-documented interactions are not a complete safety review, so always confirm your own medications with a pharmacist or doctor. Educational information, not medical advice.

Drug A

Progesterone

Progestogen Hormone

Drug B

Amoxicillin

Penicillin Antibiotic

How They Interact

This antibiotic changes the bacteria in your gut, which can prevent your body from absorbing birth control hormones properly.

What To Do

Use a backup method of birth control, such as condoms, while taking this antibiotic to prevent pregnancy.

FDA Label Information

7.4 Oral Contraceptives Amoxicillin and Clavulanate Potassium may affect intestinal flora, leading to lower estrogen reabsorption and reduced efficacy of combined oral estrogen/progesterone contraceptives.

Frequently Asked Questions

Can I take Progesterone and Amoxicillin together?

This is a minor interaction. Use a backup method of birth control, such as condoms, while taking this antibiotic to prevent pregnancy.

How serious is the interaction between Progesterone and Amoxicillin?

This interaction is classified as "minor" severity by the FDA. Minor interactions are unlikely to cause significant problems but should still be mentioned to your healthcare provider.

Why do Progesterone and Amoxicillin interact?

This antibiotic changes the bacteria in your gut, which can prevent your body from absorbing birth control hormones properly.

Understanding the Progesterone and Amoxicillin Interaction

FDA-approved prescribing information for these two drugs flags their combination as a minor-severity interaction. Progesterone belongs to the Progestogen Hormone class and Amoxicillin belongs to the Penicillin Antibiotic class - two categories that can collide when co-prescribed. The mechanism described in FDA labeling is: This antibiotic changes the bacteria in your gut, which can prevent your body from absorbing birth control hormones properly. Severity tiers matter: major flags generally advise avoidance, moderate flags often require monitoring or dose adjustment, and minor flags may only call for awareness.

Context around a specific patient determines real-world impact. Progesterone has 7 total documented interactions on file in this dataset, and Amoxicillin has 12. Each additional medication compounds the interaction surface, which is why pharmacists run full-profile checks rather than evaluating one pair at a time. FDA-derived guidance for this pair is: Use a backup method of birth control, such as condoms, while taking this antibiotic to prevent pregnancy. Timing of doses, renal and hepatic function, age, and other concurrent prescriptions all shape whether a labeled interaction matters clinically.

An interaction flag is not a verdict. A large share of labeled interactions are managed routinely in clinical practice, the fix may be as simple as spacing doses or adding a monitoring test. Others require the prescriber to choose a different medication entirely. This page surfaces FDA-sourced labeling and openFDA data for educational purposes only; it is not medical advice and cannot account for your full clinical picture. Never start, stop, or adjust either Progesterone or Amoxicillin based on a web page, speak with your prescriber or pharmacist before making any change.

Sources: FDA Drug Labels (SPL) via openFDA (2026). This is for informational purposes only and is not medical advice. Always consult your healthcare provider about drug interactions.