WWW- BATCHES of sex-enhancing pills could cause “serious health consequences” after it was discovered they contained traces of a powerful “weekend erection” pill.

A recall has been issued for batches of the “Top Gun for Men Herbal Extracts” pills after it was discovered to contain compound similar to the erection-enhancing drug Tadalafil.

Tadalafil is commonly referred to the “weekend pill”, due to its long-lasting effect on men.

It is a prescription-only erectile dysfunction drug.

According to Top Gun’s manufacturer, Sydney-based La Viva Blue, anyone who bought the product should not use it.

“(Taking the product) could give rise to serious health consequences, especially for patients with existing medical conditions such as heart problems or persons at risk of stroke,” La Viva Blue said in a statement.

“Anyone who is concerned in any way about the use of this product should consult their doctor.”

The company said a full refund would be given to purchasers of the affected products, which have an expiry date of December 2008.

It is the second discovery of a herbal sexual-enhancement product containing potent erectile-dysfunction chemicals this year.

In April, it was revealed that “Excite for Women” and “Ultimates for Men” – both “natural” products – contained the active ingredient in Viagra.