SINGAPORE: ANOTHER 29 men are suspected to have developed low-blood sugar levels after consuming an illegal sexual enhancement drug called Power 1 Walnut, in addition to 10 confirmed cases so far.

A man remains critically ill in hospital after he suffered a stroke, which is most likely linked to taking the drug.

All of the cases were of men aged between 30 and 70, and they displayed symptoms of low blood-sugar level.

The Health Sciences Authority (HSA), giving an update on Friday said more than 75,000 Power 1 Walnut and other illegal sexual potency pills and tablets, with an estimated street value of $200,000, were seized in three raids in Desker Road and the backlanes of the Petain Road vicinity from Feb 13 to 18.

The drug regulatory body was alerted to Power 1 Walnut about two weeks ago by a doctor who had tended to the first two men whose blood sugar levels dipped after taking the drug.

Made by China company Guangzhou Xinkuaili, Power 1 Walnut supposedly contains herbal ingredients.

But it has also been found to contain drugs controlled under the Poisons Act here - glibenclamide, a prescription drug for diabetes, and sildenafil, which is sold as Viagra.

The HSA is still testing the other drugs seized, but said that it was highly possible that those too are adulterated.

The unlicensed sale, possession or import of drugs controlled under the Poisons Act is an offence punishable by a jail term of up to two years or a fine of up to $10,000 or both.

A low blood sugar level, if not treated in time, can result in unconsciousness, fits or even death.