THE levels of the diabetes drug glibenclamide in four types of sexual enhancement pills found here are up to five times higher than the maximum dosage diabetics take.

This lowers blood sugar levels excessively, causing symptoms such as cold sweat, tremors, dizziness, drowsiness, weakness and confusion.

Dangerously low blood sugar levels can result in death if left untreated.

Available in some shops and the back lanes of red-light districts, they are illegally manufactured in countries such as China, Indonesia and India.

These potentially lethal drugs cost between $1 and $5 a pill, and come in all colours, shapes and sizes although the some of the fake pills are made to look like the real thing.

Those who have any information on illegal health products can call the Health Sciences Authority on 6866-3485.

Power 1 Walnut
- Tablets can be blue, green or pink.
- Contains a high dose of diabetes drug glibenclamide, and a low dose of anti-impotency drug Viagra

Zhong Hua Niu Bian
-Contains diabetes drug glibenclamide

Fake Cialis
-Contains a high dose of diabetes drug glibenclamide and a low dose of anti-impotency drug

Viagra
-Santi Bovine Penis Erecting Capsule
-Contains a high dose of diabetes drug glibenclamide, and low doses of anti-impotency drugs Viagra and Cialis