The use of gelatin to make capsules has been approved by both the United States Pharmacopoeia and the European Pharmacopoeia. It is by far one of the most popular materials in the pharmaceutical industries.
Gelatin is used for weight loss and for treating osteoarthritis, rheumatoid arthritis, and brittle bones (osteoporosis). Some people also use it for strengthening bones, joints, and fingernails. Gelatin is also used for improving hair quality and to shorten recovery after exercise and sports-related injury.