Camu camu is a sour berry that is native to the Amazon rainforest in Peru and Brazil. It is a small bushy riverside tree that grows to a height of 3-5 meters and has small flowers with waxy white petals and a sweet-smelling aroma. The fruit is maroon or purple-black when fully ripe, around 25mm in diameter, with either sweet or acidic flesh. Camu camu is considered a superfood due to its high content of certain nutrients and powerful plant compounds, including vitamin C. It is estimated to contain up to 3 grams of vitamin C per 3.5 ounces (100 grams) of fruit. Camu camu is very sour, making it unpleasant for most people to eat on its own. Instead, it is commonly found in supplement form as powders, pills, or as a juice. The powder form is most popular as it has had all water removed, making the concentration of camu camu higher and prolonging shelf-life. Camu camu is used in ice creams and sweets, and processed powder from the fruit pulp is beginning to be sold in the west as a health food in loose powder or capsule form. Camu camu fruit contains many nutrients, including vitamin C, beta-carotene, fatty acids, protein, potassium, and others. People use camu camu for the common cold, fatigue, and many other conditions, but there is no good scientific evidence to support these uses. However, camu camu has been found to have antioxidant potential, with its pulp, seeds, and skin all presenting antioxidant potential in differing amounts. Camu camu is generally regarded as a safe antioxidant supplement, but it contains a large amount of vitamin C which can cause some digestive upset if taken in excess.