Previous studies have found daily consumption of dark chocolate reduces blood pressure and is good for the heart. Now scientists have discovered why this happens-and its down to how our guts ferment the fibre in cocoa beans.
If you take Benadryl as a sleep aid, the maximum recommended dose is 50-100mg. The USFDA mandates 50mg. South Africa, the UK, Australia and New Zealand permit a dosage of up to 100mg.
Anonymous 31 Oct 2012. Diphenhydramine is benadryl & usually comes in 25 mg doses OTC. You can take 2 safely at a time. The max dose for 24 hours is 300mg, but have never heard of anyone taking this much, & definately not all at once. How many you take at one time also depends on others meds you may take also.