However, it is likely that all-. natural energy drinks may contain as. much caffeine as regular energy drinks, albeit from natural sources. Therefore, natural energy drinks could differentiate. by listing the amount of caffeine on. packaging, if the product has less caffeine.
Description. Oi Ocha is Japan's #1 green tea brand and means Tea, please!. Unsweetened. No calories. With more than 100% RDA of Vitamin C.  1  All natural. 2  Unsweetened.
Drink green teas known to be naturally low in caffeine. Some green tea's are processed in such a way as to be naturally low in caffeine. Here are three: 1) Japanese houjicha green tea is pan-fried or oven roasted. The tea is fried at high temperature and the roasted flavor predominates this blend. The main types of Houjicha are light and deep-fried.