IT IS the ‘herbal’ energy drink marketed to adults that is guaranteed to give you a rise.

But authorities are warning that MosKa may not provide the happy ending consumers are hoping for.

The Therapeutic Goods Administration is warning of the ‘stiff’ side effects of drinking MosKa, after it was found to include ingredients used in the treatment of erectile dysfunction.

While some might not consider this an undesirable side effect, a safety advisory released yesterday warns that the drink “poses a serious risk to your health and should not be taken”.

The drink contains vardenafil, a prescription-only substance, at levels above what is allowed in Australia.

Side effects can include nausea, abdominal and back pain, palpitations and priapism, where the penis remains erect for longer than four hours.

Ironically this can cause impotence in rare cases, or can bring on a heart attack.

MosKa can be purchased online and the drink was also promoted at Sexpo Sydney last year, according to its Twitter account.

But the TGA warns that its supply is now illegal in Australia and it will work with Customs to help stop supplies entering the country.

“If these bottles are found at the border by Customs they will be seized and destroyed,” the advisory says.