A member asked:

Is it a bad idea to take acetaminophen, dextromethorphan, phenylephrine, diphenhydramine, & tetrahydrocannabinol together?

A doctor has provided 1 answer
Dr. Romanth Waghmarae answered

Specializes in Pain Management

Multiple mes: Yes- all the meds you mentioned can have additive effects when taken together. Please talk to your doctor.

Answered 1/6/2014

5.6k views

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