17 Nov 2012
All good answers, but I want to add if you're talking about days in a row I have found it loses its effectiveness. I think it's one of those that tolerance builds up quickly. So I try to use it as a last resort if nothing else eases symptoms. The effectiveness comes back if you leave it alone for a bit tho, like for me a few days without it and it works again.
- Diphenhydramine Information for Consumers
- Diphenhydramine Information for Healthcare Professionals (includes dosage details)
- Side Effects of Diphenhydramine (detailed)
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1 answer • 16 Sep 2009
I have been using Diphenhydramine for 20 years or so. I have been increasing my dosage sometimes up?
... to 100mg lately to get allergy relief or to get me to sleep. Now I am experiencing night sweats, confusion, blurred vision, lethargy, and slight ...
1 answer • 2 May 2013
An have little bitty bumps on her everywhere
2 answers • 2 Nov 2014