Generic Antabuse is used to treat chronic alcoholism. It interferes with the metabolism of alcohol resulting in unpleasant effects when alcohol is consumed.
It can help patients with an alcohol abuse problem not to drink alcohol. When taken with alcohol, this medicine produces unpleasant effects. This medicine is part of a recovery program that includes medical supervision and counseling. It is not a cure.
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Regarding the effect: I do notice an increase in bloodflow and a better stamina using the pills (I use 50mg). A side-effect I have noticed is that my nose clogs up so I seem like I have a cold for an hour or so after taking one pill. No other side-effects than that.