"Once relaxation beverages consisted of alcohol chamomile tea and warm milk. Now the field includes a slew of new drinks promising a better nights sleep using such ingredients as melatonin valerian root and  think turkey  tryptophan.  They have apt names such as Unwind iChill and Dream Water and offer such flavors as BerryBerry Tired Snoozeberry and Lullaby Lemon. Theyre the inverse of energy drinks. Consumers can wake up with Red Bull and then wind down with Slow Cow.  But can consumers trust these fruity concoctions to give them their zs  According to Steven M. Scharf director of the Sleep Disorders Center at the University of Maryland in Baltimore the answer is a resounding maybe.  The issue is this Some of them probably have some biologic effect but they havent been as well studied as youd like Scharf says. Nobodys ever compared valerian root to the prescription sleep aid Ambien.  The chief ingredient in many of these beverages is melatonin a hormone that induces sleepiness and helps coordinate the bodys biological clock. Its typically released by the pineal gland around  p.m. secretion stops around  or  a.m. helping to trigger the body to wake up Scharf says.  The body produces about threefourths of a milligram of melatonin a day. The manufacturer of the sleep aid Snoozn says its .ounce shots contain five milligrams of melatonin Unwind a relaxation blend has three milligrams per ounce can.  Oral doses of melatonin havent worked much better at inducing sleep than a placebo in most studies Scharf says and a single concentrated shot of the stuff doesnt exactly mimic the bodys timerelease system. However a study published in January in the Journal of the American Geriatrics Society http found that a prebedtime cocktail of magnesium zinc and a fivemilligram dose of melatonin significantly improved sleep among a group of  elderly Italian insomniacs.   Jason Healy the head of InterMark Brands which markets Snoozn says he drinks his product on nights when he is stressedout or when he is traveling internationally. The back of the Snoozn bottle says the beverage will combat stress energy drinks and sleeplessness and takes about  minutes to take effect. When it launches nationally in March Snoozn will be available in grocery and convenience stores and pharmacies like most of these drinks.  We attack insomnia from two angles Healy says. Youve got to turn off all the stimulants and also get into a natural sleep cycle.  Melatonin is used for the latter while ingredients such as valerian root and chamomile take care of the former Healy says. Both of those herbs are associated with soporific effects according to the Natural Medicines Comprehensive Database httpnaturaldatabase.therapeuticresearch.comhome.aspxcssND. Valerian root has properties that resemble the benzodiazepine class of medications such as Valium and Xanax but Scharf says he has no idea how they compare with standard sleeping pills because of the lack of comparative studies.  Finding a niche Containers of relaxation drinks look similar to those of energy drinks. Many mimic the diminutive shape of the Hour Energy shot or the bright graphics and tall narrow can of Rockstar or Monster. Flavors range from a pleasant fruitflavored soda to just shy of cough syrup.  Many relaxation beverages contain safety labels that warn consumers that they should neither drive or operate machinery after drinking them nor mix them with alcohol. Some say they arent intended for people younger than  or for pregnant or nursing women  a warning that the Food and Drug Administration has also made about melatonin.  In January  the FDA sent a warning letter to the Innovative Beverage Group which makes the relaxation beverage Drank saying the melatonin it uses is an unapproved food additive and not generally recognized as safe.  Drank is still being sold with melatonin in it. In a statement Drank inventor Peter Bianchi says the safety of Dranks consumers remains a top priority and the company is working to modify the products packaging and marketing to reflect its classification as a dietary supplement.  The FDA regulates conventional beverages ingredients and labeling claims more strictly than those of dietary supplements. Drank is still classified as a beverage.  The relaxation drink market is tiny compared with the energy drink market says Garima Goel Lal a senior analyst at the consumer research firm Mintel.  A Mintel survey found that  percent of all functional beverage users said they were looking for beverages to release stress.  A functional beverage  the term is used for sport energy and relaxation drinks  is a nonalcoholic drink that claims to have health benefits. The number of nonalcoholic beverages making relaxation claims continues to rise  new ones came on the market in  according to Mintel. The field is too young to identify the leaders and the losers Goel Lal says.  Theyre trying to find a niche she says.  Multiple choices Katherine Zeratsky a registered dietitian at the Mayo Clinic in Rochester Minn. has blogged about relaxation drinks. She says that people with certain health conditions such as high blood pressure should consult their physician before downing a can of Unwind or any of the other sleep beverages.  A person can just go to the convenience store and purchase this Zeratsky says. Theres this perception that its safe and depending on the person it might not be a good choice."