Nothing or...: Benadryl (diphenhydramine) may make your drowsy, caffeine may keep you awake. So the results my be nothing, drowsiness, or stimulating depending on the individual doses.
Answered 3/26/2019
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A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
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