Japanese businessmen who work in the same office building . `` I see a lot of businessmen who say they do n't have time to sleep . They ca n't take a break from working and get the vitamin drip for an extra kick of energy , '' a Tenteki nurse told CNN . `` Blue '' is the most requested vitamin pack among these men : a concoction of B1 and vitamin E that claims to offer relief from exhaustion . Registered nurses and doctors administer the drips at Tenteki , but there 's no conclusive medical evidence to back up the health claims . Many nutritionists actually caution against using injectable vitamin supplements because the quantities are not regulated . `` More is not necessarily better ... some vitamins and minerals can be toxic in high doses , '' particularly the fat-soluble ones which the body stores like Vitamins A , D , E and K , explained Claire Williamson , Nutrition Scientist at the British Nutrition Foundation . In Europe and the United States vitamin shots are popular among celebrities with hectic lifestyles and little time to sleep , particularly vitamin B 12 . Former Spice Girl
-LRB- CNN -RRB- -- In trendy neighborhoods of Tokyo customers are lining up for vitamin injections that promise to improve health and beauty . A Japanese woman receives an intravenous vitamin supplement at the Tenteki Cafe in Tokyo . These intravenous vitamin `` drips '' are part of the latest quick-fix , health fad catching on in Japan : the IV cafe . Each drip pack contains saline solution and specific vitamins and minerals to target a particular health ailment or beauty concern . `` I used to take vitamin supplements , but changed to the IV drip because I feel the effects more quickly , '' a 20-something woman at the Tenteki 10 Café told CNN . She said she receives specific injections to get better skin , burn fat and boost her energy . There are 10 different varieties to choose from at Tenteki . The `` orange '' variety touts anti-aging properties , loaded with antioxidants . The `` placenta pack '' is said to help rejuvenate and ease muscle stiffness . Prices range from $ 20 - $ 30 per injection , and nurses see about 30-40 people each day . Their most common patients are