On the basis that it contained only the herbal ingredients declared on its label, this product would be considered as a form of traditional medicine and is sold in Singapore without any registration or pre-market approval from HSA.

But HSA says the taladafil was impregnated in the capsule to try and avoid analytical detection of the adulterant.

Taladafil is the active ingredient in the prescription medicine cialis, which is used to treat male erectile dysfunction and should only be prescribed by a doctor.

Consumption can cause serious adverse reactions such as heart attack, stroke and severe hypertension, particularly in susceptible individuals with heart conditions and/or who are taking nitrate drugs.

HSA warns the public not to buy or consume XP Tongkat Ali Supreme.

Members of the public seeking further clarification about the recall or wishing to report illegal activities involving health products can call HSA's 24-hour hotline at 6866-3485 or email hsa_is@hsa.gov.sg.