No caffeine: Benadryl (diphenhydramine) is not effective as a sleep aid and has never improved sleep any more than a sugar pill (placebo) in good studies. It can, however, reduce quality of sleep or in some people actually keep you up by causing agitation (more likely in children though) Zocor is unlikely to affect sleep. 3mg of melatonin taken 4hours before bedtime can be a safe and effective OTC sleep aid in some people.
Answered 10/23/2017
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