|
My experience over the last 15 years with acetaminophen/diphenhydramine(generic for Tylenol P.M.) has been to allow at least 8 hours between ingestion and when you want to be bright eyed and bushy tailed the next morning. YMMV. Also, most of my trips are at elevations of 10-12,000+ feet, and I have not experienced any untoward effects so far. Again, YMMV. In my case, it also has the side benefit of keeping my otherwise stuffed up nasal passages clear, which is also necessary for a good night's sleep. This is strictly, I think, a personal problem of mine. IMHO, a great little pill that I am never without in the high country.
|