"Other countries have different regulations so we will be selling overseas.

I'm happy to change the name but they are going to have a real David and Goliath battle if they want me to stop,” he added.

However, food authorities and health groups are concerned, saying the drug is infecting the oysters.

"There are tight regulations on oysters in NSW so they are safe. They can't add Viagra to oysters - it is no allowed, it's up to doctors to prescribe Viagra. Even giving it away is illegal as it is a form of marketing to induce a sale," a Food Safety NSW spokesman said.

Source: ANI
LIN/M