Nitroglycerin??: nitroglycerin is pretty sensitive to light and won't last long - check the bottle for expiration date, and don't count on it to help past that time. if you mean glycerol (like for inducing BM) that is unlikely to ever go bad.
Answered 7/14/2014
3.9k views
A doctor has provided 1 answer
2 doctors weighed in across 2 answers
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