Citranaxanthin is used as a food additive and is a source of animal feed. It naturally occurs in the peel of citrus fruits. It is rich in vitamin A, and is thus very beneficial for eyesight. Other health benefits include strengthening of bones, reducing blood cholesterol, improvement of acne and psoriasis, eliminating wrinkles, and helping in respiratory problems. It is also effective in glaucoma and measles. It has anti-oxidant, anti-cancerous, antimicrobial properties. Its side effects are rare. It can cause digestive upset.