Illegal sports supplements could cause kidney failure, seizures and heart problems, experts warned today.
Illicit supplements which claim to boost energy or enhance muscle growth could contain dangerous ingredients, the Medicines and Healthcare products Regulatory Agency (MHRA) said.
Two men in Brighton were left suffering from severe jaundice and symptoms of liver dysfunction after taking a supplement called Celtic Dragon, an MHRA spokesman said.
One of the men was in such a bad condition that medics thought he would need a liver transplant.
The MHRA launched a campaign warning people not to buy illegal sports supplements after it found 84 products for sale that contain dangerous ingredients such as steroids, stimulants and hormones.s
It has also asked major supplement suppliers to submit their products for review.