Durban's Poison City Brewing has launched the country's first cannabis lager, but relax it won't make you high.

The Durban Poison Cannabis Lager contains no THC (the primary psychoactive ingredient in cannabis that delivers the 'high') but is brewed with hemp oil that creates, according to the brewery, a distinctive and refreshing flavour.

The larger, which is meant to appeal to the "young and trendy", is billed as an exceptionally easy drinking beer which is lighter in alcohol.

Graeme Bird, co-owner and founder of Poison City Brewing says: "hops and cannabis are very closely related and share many similar chemical characteristics, which means that hemp is an interesting and viable ingredient for beer making."