May be genetic: Some people lack the specific enzymes that convert an opioid into the active molecule. This is well known with codeine, and may be the case in certain people with other semi-synthetic drugs, like hydromorphone, as well.
Answered 2/6/2014
4.5k views
4 doctors weighed in across 2 answers
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