Chinese Herb Kudzu May Help Drinkers Cut Down

Chinese Herb Kudzu May Help Drinkers Cut Down


May 17, 2012 — An extract from the Chinese herb kudzu may help drinkers cut down on drinking, according to a new pilot study.

“It didn’t stop the drinking,” says researcher David M. Penetar, PhD, assistant professor of psychology at McLean Hospital and Harvard Medical School. “They still drank, but they drank less.”

He studied the extract puerarin. It is one of the substances known as isoflavones found in kudzu.

The study is published in Drug and Alcohol Dependence.

12 Myths About Your Hangover

Drinking Problems

More remedies are needed to help drinkers who overdo it cut down, Penetar says. The medications approved for treating alcohol abuse and dependence don’t work for everyone, he says.

About 1 in 6 U.S. adults binge drinks, according to a CDC report. Experts disagree on the definition of binge drinking. According to the CDC, binge drinking is having four or more drinks on one occasion for a woman and five or more for a man.

Kudzu: A Brief History

In Chinese pharmacy books, kudzu is listed as a possible treatment for alcohol-related hangovers and cravings, Penetar tells WebMD.

“Some of the references go back to 600 A.D.,” he says.

Today, it’s used in China and other countries to treat coronary problems and blood-flow problems, Penetar says. “It has a good safety record already.”

It’s touted as a hangover remedy. However, studies looking at the effects of kudzu extracts have produced mixed findings, Penetar says.?

Herb to Cut Drinking: Study Details

Penetar’s team studied 10 men and women, average age 26. They typically drank about 18 alcoholic beverages a week.

“We set up a lab room to make it look like an apartment,” Penetar says.

The lab-turned-apartment had a reclining chair, TV, DVD player, and a refrigerator stocked with each person’s favorite beer. Non-alcoholic beverages were also available.

The researchers conducted four different sessions:

  • The first session was to make the participants familiar with the surroundings. They drank but took no herbs.
  • Before the second, they took either 1,200 milligrams of puerarin or identical-looking placebo pills for a week. They came to the lab and could drink as much as they wanted, up to six beers.
  • Two weeks later, they came back for a drinking session, without taking the herb or the placebo.
  • For a final session, they took whichever pill they didn’t take the first time. They took it for a week, then went to the lab again for a drinking session.

The participants provided urine samples so the researchers could confirm they were compliant.

They were given dinner after the sessions and sent home in a taxi once their blood alcohol level declined.

Results of Puerarin Treatment

“When they were treated with puerarin they drank about a beer less than when they were treated with placebo,” he says.

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