Generally, amoxicillin doesn’t reduce the effectiveness of combined oral contraceptives (birth control pills containing estrogen and progestin).
However, some antibiotics, though not amoxicillin, can interfere with the gut bacteria that help process certain medications. This could theoretically impact hormonal birth control absorption, but this impact is usually minimal and inconsistent.
Specific studies are lacking to definitively prove amoxicillin’s effect on birth control pill efficacy. While a slight decrease in effectiveness is possible in some rare cases, the risk is generally considered low.
To be safe, consider using a backup method of contraception, such as condoms, during your amoxicillin course and for 7 days afterward.
Always consult your doctor or pharmacist if you have concerns about drug interactions, especially regarding birth control pills and antibiotics. They can provide personalized advice based on your specific situation and medications.
