A new, limited edition beer made with Viagra is being released at the end of this month in the United Kingdom to celebrate the royal wedding of Prince William and Kate Middleton. According to the label on the bottle, BrewDog’s “Royal Virility Performance,” a 7.5% ABV IPA, contains Viagra, chocolate, and Horny Goat Weed. The label reads:

‘Arise Prince Willy.’ A beer to stir the loins of newlywed princes, summon the ghost of long lost princesses and cure the stammer of stuttering kings.

According to Metro UK, drinking three of these beers is the equivalent of taking one Viagra.

The BrewDog blog explains the reasoning behind the beer:

With this beer we want to take the wheels off the royal wedding bandwagon being jumped on by dozens of breweries; The Royal Virility Performance is the perfect antidote to all the hype. A beer should be brewed with a purpose, not just because some toffs are getting married, so we created something at our brewery that will undermine those special edition beers and other assorted seaside tat, whilst at the same time actually give the happy couple something extra on their big day.

The beers are available to pre-order for £10 each (about $16). 20% of the proceeds will go to Centrepoint, a charity for homeless people that Prince William Supports.

James Watt, “Head of Stuff” at BrewDog, commented on the BrewDog blog that “We put a bottle in a jiffy bag marked ‘Prince Willy, Buckingham Palace.’ We sent it by Royal Mail as we presume they are most likely to know where he lives. As the bottle says, this is about consummation, not commemoration, so we hope he gets it.”