Well, turmerin, the compound in turmeric has been medically proven to help neutralize venom from King Cobras in snakes (reference1, reference2). It has also been used in ayurveda for snake bite treatment (reference) The alcohol I guess is just used to help ingest the turmeric and act as a pain reliever, though it strangely seems counter-productive since most snakebite help guides advice against the consumption of alcohol after getting bitten (reference1, reference2) due to its blood thinning properties.
Having said that, I guess personally, I would go for anti-venom rather than ingest turmeric. As a quick remedy until you get the anti-venom you should be able to depend on turmeric.