Does amoxicillin affect birth control? I used this antibiotic for my throat.
Nope! Antibiotics like amoxicillin won’t change the effectiveness of your birth control. The antibiotic rifampin (also known as Rifadin and Rimactane) is the only exception — it can lower the effectiveness of the pill, patch, and ring. So unless you’re using one of those birth control methods and taking rifampin, which is a medicine used to treat tuberculosis, there’s nothing to worry about.
There are, however, some other medicines besides antibiotics that can make birth control not work as well. So it’s very important to be open and honest with your nurse or doctor about what medicines you’re on — no matter if it was prescribed or not — so they can give you the best care.