Among general reasons for the possible harmful effects of dietary supplements are: a) absorption in a short time, b) manufacturing quality and contamination, and c) enhancing both positive and negative effects at the same time. The incidence of liver injury from herbal and dietary supplements is about 16–20% of all supplement products causing injury, with the occurrence growing globally over the early 21st century. The most common liver injuries from weight loss and bodybuilding supplements involve hepatocellular damage with resulting jaundice, and the most common supplement ingredients attributed to these injuries are green tea catechins, anabolic steroids, and the herbal extract, aegeline. Weight loss supplements have also had adverse psychiatric effects. Some dietary supplements may also have adverse interactions with prescription medications that may enhance side effects or decrease therapeutic effects of medications.
Among general reasons for the possible harmful effects of dietary supplements are a) absorption in a short time b) manufacturing quality and contamination and c) enhancing both positive and negative effects at the same time The incidence of liver injury from herbal and dietary supplements is about 16–20% of all supplement products causing injury with the occurrence growing globally over the early 21st century The most common liver injuries from weight loss and bodybuilding supplements involve hepatocellular damage with resulting jaundice and the most common supplement ingredients attributed to these injuries are green tea catechins anabolic steroids and the herbal extract aegeline Weight loss supplements have also had adverse psychiatric effects Some dietary supplements may also have adverse interactions with prescription medications that may enhance side effects or decrease therapeutic effects of medications