Antipokhmelin is a Russian tablet that allegedly helps to prevent or overcome the negative effects of alcohol consumption and hangover. The main ingredient is succinic acid, also found in amber. It is marketed as RU-21 in the US and UK.RU-21 UK Website Claims of effectiveness are based primarily on anecdotal evidence, and there have been no known placebo controlled double blind studies published in peer reviewed scientific journals. RU-21 was developed by Prof. Eugene Mayevski at the Institute… (More on Ru-21)