The 5 Best Gymnema Supplements of 2026, Ranked on Their Labels

One capsule a day of 400 mg GS4 PLUS 6:1 extract, "Standardized to Gymnemic Acids" [16]. The percentage is not on the US label. The maker of that extract sells it in a 25% and a 75% grade [17], and NOW does not say which. If it is the 25% grade, one capsule gives about 100 mg of gymnemic acids and, at $5.16 a month, slightly more gymnemic acid per dollar than Dosera. That is a real win and we print it. To match Dosera's 375 mg a day you would need about 4 capsules, $20.63 a month, and you still have no bitter melon, fenugreek or chromium. NOW claims an NPA A-rated GMP certification and "quality tested in the USA"; no independent lab is named [16].

Rated 4.4 from 2,792 Amazon ratings, with 5% one-star [16]. Amazon's own review summary says "while some report reduced cravings, others say it didn't help their blood sugar levels" and that customers "disagree on whether it cancels out the taste of sweetness." It also lists reported side effects "including nausea, headaches, and potential blood pressure issues." One iHerb owner of this bottle wrote, "I've noticed the urge for sweets feels less intense after a few weeks of consistent use."

Each caplet is 400 mg of organic gymnema stem powder plus 300 mg of leaf extract at 25% gymnemic acids, which is 75 mg of acids [15]. Take one twice a day and you get 150 mg of gymnemic acids and 1,400 mg of total material. The "700 mg" on the front is powder plus extract, not 700 mg of extract. It is gymnema only, and it is USDA Organic [14]. No independent lab is named on the Amazon page.

It is Amazon's number one in Gymnema Sylvestre, rated 4.4 from 7,028 ratings, with 5% one-star [14, 25]. Amazon's own review summary says experiences "are mixed, with some finding it effective while others report no effect, and some experiencing stomach issues." It adds that "opinions on swallowability vary between those who find it easy to swallow and those who struggle with it." A WebMD owner of this caplet wrote that the "cramping and gas after taking is almost more than I can bear."

Arazo prints every amount, and we give it full marks for that [18]. The label shows what you get in two capsules: 6 mg of gymnema extract with no percentage, 40 mg of bitter melon extract, 134 mcg of chromium, 100 mg of cinnamon powder, 50 mg of banaba and 15 others, down to 2 mcg of vanadium. Dosera gives 500 mg of gymnema. Arazo gives about 1% of that. Its own label lists possible side effects "including increased heart rate, increased blood sugar levels, insomnia, headaches" and more [18].

Rated 4.2 from 9,953 Amazon ratings, the most of the four, with 6% one-star [18]. Amazon's review summary is positive overall but names "Side effects" as a theme with 260 reviews behind it. Arazo says it is "third party safety tested for purity" but does not name the lab, and SuppCo lists product-specific testing as not verified [21]. One owner of a 20-herb blend put the problem simply: "found the only one that matters is gymnema sylvestre."

Glucocil lists 14 ingredients, including gymnema, chromium, berberine, alpha-lipoic acid and cinnamon, and gives one number for all of them: "2,250mg of active ingredients per serving" in a "proprietary blend" [19]. The gymnema amount, the chromium amount and the herb ratios are not on Amazon or on the maker's ingredients page. Bitter melon is not in it. The directions are 2 softgels with each of your two largest meals, 4 a day after a 3-day start [20]. That is $49.47 for 30 days, more than double Dosera.

Rated 4.2 from 8,317 Amazon ratings, with 7% one-star, the highest share of the four [19]. Amazon's review summary says "opinions on value for money are divided between those who find it worth the investment and those who consider it expensive." The label itself warns that unabsorbed carbohydrates "may cause some side effects, including stomach symptoms such as diarrhea, bloating, stomach pain, gas." The maker says it is "regularly tested by independent laboratories" without naming one.