Illicit treatment: The unregistered medicine contains pink tablets, yellow capsules, orange tablets and brown capsules.

Consumers are advised to avoid an unregistered medicine sold in a plastic bag containing four types of pills with western drug ingredients.

The product, sold illegally in a Thai grocery shop in Kowloon City, contained pink tablets, yellow capsules, orange tablets and brown capsules.

The product had been purchased and brought in from Thailand by the proprietor. The Department of Health has no record of it being legally imported, or submitted for registration.

Among other things, the pills contain: Orphenadrine - a muscle relaxant which can cause mouth dryness, blurred vision and irregular heart rate; and Indomethacin and diclofenac - pain killers that can cause gastro-intestinal discomfort. All should only be used under medical supervision.

A 58-year-old man was admitted to Queen Elizabeth Hospital on May 19 for drowsiness, agitation and disorientation after taking the product. He has since recovered, but there is no evidence his symptoms were caused by the product.

Apart from 28 bags of the product found, 88 items of other suspected poisons, antibiotics, and dangerous drugs were also found in the shop. They have been seized and prosecution action is being taken.