1884, an American doctor extracted a substance called cocaine from coca bush, which has the effect of relieving pain. Pemberton believes that pain is a common disease of patients. If it can be made into analgesic drugs to relieve the pain of patients, it will be very popular! Therefore, pharmacies in pemberton began to buy leaves and seeds of coca bush in large quantities. Pemberton and a man named Hess extracted cocaine from the leaves and seeds of coca bush. After repeated experiments, a potion for treating headache was successfully prepared. Pemberton named this dark green potion? Coca cola? . ? Coca cola? After clinical trials, potions have achieved good results, so they are often in short supply. At this time, Hess saw the drugstore? Coca cola? Not much, will it? Coca cola? Mixed in many drinks for sale. Who knows, this kind of casual preparation makes? Coca cola? It turns deep red and is very popular with customers. When pemberton knew the truth, he hid in the pharmacy room and played it again and again? Coca cola? It is mixed with various drinks in different proportions. He spent more than three months day and night, and finally succeeded in preparing a crimson drink with unique flavor and refreshing thirst.