Produced by Otsuka Pharmaceutical Co., Ltd. in 1965. Soda drink which contains vitamin C you need a day and vitamin B2, B6, essential amino acids, honey. It is said 30 billion bottles sold by 2011 in Japan. It's popular to find in a vending machine here in japan. If you are interested it's able to buy direct from Japan through Rakuten Global refer below. If this is the first time to buy see “How to amazon.jp”, “How to Rakuten” on the right side. But maybe don’t need to because it is easy to do.
To help you to buy stuff direct from Japan through Japan's largest and well known online shop Rakuten and amazon.jp