After receiving feedback on two cases of adverse effects seen in consumers, it said tests conducted on the coffee product found that it is not natural or herbal and instead, contained high concentration of an undeclared synthetic potent medicinal ingredient, “tadalafil”.

According to the Singapore agency, a consumer was admitted to the emergency department after he experienced adverse effects such as body ache, chills, migraine, and tightness around the jawline.

“Another consumer experienced priapism, or prolonged erection of about four hours, after taking the product. Priapism is a serious condition and can lead to penile tissue damage and permanent loss of potency if not treated immediately,” it said on its website.

HSA said consumers who consumed the product according to the labelled instructions of one sachet daily could be overdosing on more than 10 times the usual prescribed dose of tadalafil.

Tadalafil is a prescription medicine used to treat erectile dysfunction and should only be given under medical supervision, it said.

“Tadalafil can also pose serious health risks to certain individuals, including those with heart-related problems. It can cause potentially life-threatening low blood pressure in those who are on heart medication, especially those containing nitrates,” HSA explained.

Prime Kopi Pejuang 3 in 1 is sold on e-commerce sites such as Shopee, Lazada, Qoo10 and Carousell, and also on Facebook.

HSA said it has worked with the platform administrators to remove the affected listings and has issued warnings to the sellers.

“All sellers and suppliers must stop selling or supplying Prime Kopi Pejuang 3 in 1 immediately. HSA will not hesitate to take stern enforcement action against anyone who sells and/or supplies products found to be adulterated with potent medicinal ingredients.

“Sellers and suppliers who are selling or supplying Prime Kopi Pejuang 3 in 1 are liable to be prosecuted and if convicted, may be imprisoned for up to two years and/or fined up to S$10,000,” it said.