In one study, 600–1,500 mg of aged garlic extract was just as effective as the drug Atenolol at reducing blood pressure over a 24-week period ( 12 ). Supplement doses must be fairly high to have the desired effects. The amount needed is equivalent to about four cloves of garlic per day.

Do garlic pills work as well as fresh garlic?

Medical research links garlic to a number of health benefits. However, some studies have suggested that raw garlic may be more effective than the cooked version, while garlic supplements are the most effective.

How many garlic pills should I take a day?

Dosages generally recommended in the literature for adults are 4 g (one to two cloves) of raw garlic per day, one 300-mg dried garlic powder tablet (standardized to 1.3 percent alliin or 0.6 percent allicin yield) two to three times per day, or 7.2 g of aged garlic extract per day.