it is 5-HTP (the 5 is important) and yes, it can be purchased over the counter.. can usually be found in the supplements aisle - being you are in the UK, not really sure what you have for stores, but I would expect that chain drug stores would have it. You should also be able to find it online... Natures Bounty, Now and Spring Valley are all reputable brands of supplements (at least here in the US), there are others as well, those are just off the top of my head.What's 'HTP' & can it be bought over the counter?
What do 5-HTP supplements do?
5-HTP dietary supplements help raise serotonin levels in the brain. Since serotonin helps regulate mood and behavior, 5-HTP may have a positive effect on sleep, mood, anxiety, appetite, and pain sensation. 5-HTP is not found in the foods we eat, although tryptophan is found in foods.
Not sure why you / someone would think 5-HTP helps alertness - sleep is one of the things it's most recommended for, like you say. But it's not at all well studied, because of supp mishaps early on, "won't" happen again.Whoops, I missed this question. Apparently it is supposed to help you not be so brain foggy? I find that answer kind of weird because I sleep quite well with htp