Not enough info: There are many types of Nyquil and many types of sudafed PE (each containing different drugs). Ther are moderate potential side effects btwn diphenhydramine & doxylamine (Sudafed PE Nighttime Cold). Also moderate potential for dextromethorphan & diphenhydramine. You are going to have to plug the acurrate names for your medications into a drug interaction checker to know.
Answered 9/14/2017
548 views
3 doctors weighed in across 2 answers
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