If u take them corr: Correctly not very often, if taken incorrectly then they can fail often.
Answered 7/3/2013
5k views
Rarely: When they do fail it is most commonly due to "operator error", which means the person forgot to take the pill correctly. There are also other uncommon causes for failure.
Answered 12/29/2022
5k views
4 doctors weighed in across 2 answers
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more.
Ask your question