So I found something...
4-pentanolide, sold as "Renewtrient"
"is a breakthrough sleep-aid/mood-enhancer, which, upon ingestion, is converted by the body into a GHB analogue that has been found to bind to the receptor with 15% greater affinity than GHB itself. And, unlike 1,4 butanediol, it is perfectly legal for human consumption. It is also naturally occurring and on the FDA's "Generally Regarded as Safe (G.R.A.S.) list.
Tranquili-G is the tradename for 4-pentanolide (patent pending). Upon ingestion, Tranquili-G is converted via lactonase catalyzed hydrolysis -- the same mechanism by which GBL is converted to GHB (1) -- to the potent GHB analogue, 4-methyl-GHB . 4-methyl-GHB has been found to bind to the GHB receptor with 15% GREATER affinity than GHB itself . Gamma-hydroxybutyrate exerts its effects through specific GHB receptors , thus consumption of a precursor to a compound which binds to the GHB receptor would be expected to result in physiological and psychological effects quite similar to those produced by GHB, such as sedation, reduction of anxiety, and stimulation of growth hormone release.
Tranquili-G is a naturally occurring compound -- -- found in such things as beef, beer, cocoa, coffee, mushrooms, peaches, peanuts, wheat bread, heated butter, and honey. It is perfectly legal for sale and human consumption and already enjoys widespread use as a flavoring agent in candy, meat products, and baked goods. It is on both the FDA's and the Flavor and Extract Manufacturers Association's (FEMA) Generally Regarded as Safe (G.R.A.S) lists. In addition, it is extremely non-toxic, with an LD50 (the dose that kills 50% of subjects) of 8.8g/kg (4) - this is 200-300 times the effective dose. For comparison, GBL, which is also quite non-toxic, has an LD50 of less than 2g/kg ."
Anyone tried this?