Guarana is a soft drink, made from the extract of the whole guarana (Paullinia cupana) seed. It is rich in caffeine and is consumed mainly in Paraguay, Peru, Brazil and other countries such as refreshing and tonic France. Brazilian law restricts this denomination to non-alcoholic beverages that contain at least 1% of extract and with the only water additives, sweeteners, acidulants and aromas. The largest producers of guarana are Brazil's Antarctica and Brahma, owned by the multinational AmBev. In Peru, there is a soft drink called Guarana, which is a product of the Backus firm. In Argentina, there is V (vi) of the firm Villa del Sur, it also contains guarana extract and advertising is made alluding to its energizing properties. Before the arrival of Europeans, Native Americans already knew this drink. They crushed the seeds and mixed them with water. Then, they formed rods and let them dry until they were hard and, finally, filled them with the bone of the pirarucu fish's palate. The remaining powder dissolved in water or fruit juice. The natives recognized the medicinal value of this drink and also used it to combat fatigue. Even today there are those who hold their courage to treat arteriosclerosis, diarrhea, dysentery, migraine and neuralg.