Question: how many mg of diphenhydramine should i take for sleep?
Answer: Short-term insomnia - diphenhydramine comes as 25mg and 50mg tablets. You'll usually take 50mg, 20 minutes before you go to bed. Cough and cold symptoms - diphenhydramine comes mixed with other medicines to treat the symptoms of coughs and colds. It comes as tablets, capsules and as a liquid that you swallow.