An extract of the Chinese herbal root kudzu reduces alcohol drinking by heavy drinkers in a naturalistic setting
The extract contained 26% (130 mg) active isoflavones (20% puerarin, 4% daidzin, 2% daidzein; an improved HPLC analysis revealed that the total puerarin content includes both puerarin and 3-methoxypuerarin.). Participants were randomized on a blind basis to receive either 4 capsules of the extract (for a total of 520 mg isoflavones) or placebo (sugar beet…