sorry to burst peoples bubble here but attempting to sell a beer laced with a drug is really iresponsable. viagra effects blood pressure and could have a potential leathal effect on someone with low bp as well as posing a risk to angina patients who may need to take nitroglycerin by causing a lethal drop in BP. and these are just the prehospital drug interactions.
i suppose such people should know better than to take a product called viagra beer but they may not take it seriously or even be aware of its name if handed it at a party or bbq.
ill get my OMAC coat now and get back to thinking about the beer at the taste festival