5-Hydroxytrytophan or 5 HTP is a naturally-occurring chemicalprecursor and amino acid. It is also called as a oxitriptan which works as a metabolicintermediate in the process of the biosynthesis of the neurotransmitter melatoninand serotonin. These substances are sold over-the-counter in Canada, United Kingdomand the US as a sleep aid, appetite suppressants, antidepressant and most ofthe time as a dietary supplement. Nevertheless, if you are planning to buy 5-HTP inoffline and online shops, make sure to read first the product reviews ofcustomers who have started using the substance. These reviews allow businessmento increase conversion and remove any qualms that a prospective client may haveabout a product or service. You can find5-HTP reviews in review publications and journals while others can surf orconnect with the Internet to look for websites that provide helpful informationabout managing your health and providing support to people who need informationand tools in overseeing their health and their families. 5-HTP reviews can beaccessed in DailyStrength, WebMD, Azamon.com and many others.