Scores 35/35 for dosage transparency, 25/25 for a clean formula, 21/25 for label completeness. 4 ingredients disclosed with amounts.
capsule · 60 servings · $0.97/servingBuy on iHerb$58.40
Ranking
10 Best Blood Sugar Support Supplements
Blood sugar support is a category where ingredients like berberine are used at drug-like doses, and where labels must be read carefully by anyone taking diabetes medication. The products at the top of this ranking state each amount so the dose can be checked.
We ranked berberine, cinnamon, chromium, gymnema, alpha-lipoic acid and blood-sugar formulas sold on iHerb by label quality.
Our top picks
Scores 35/35 for dosage transparency, 25/25 for a clean formula, 21/25 for label completeness. 4 ingredients disclosed with amounts.
capsule · 60 servings · $0.97/servingBuy on iHerb$58.40
Scores 35/35 for dosage transparency, 24/25 for a clean formula, 21/25 for label completeness. 7 ingredients disclosed with amounts.
capsule · 30 servings · $1.13/servingBuy on iHerb$33.96
Top 10 ranked
#ProductScoreFormServingsPrice
How we ranked them
Every product is scored 0–100 from its label data in the NIH Dietary Supplement Label Database: dosage transparency (35 points - are amounts stated per ingredient, or hidden in a proprietary blend?), label completeness (25), formulation cleanliness (25 - fillers, dyes, titanium dioxide and other non-active ingredients) and ingredient profile (15). The Top 10 admits only products scoring 60 or higher; among those, products with a verified retail listing are shown first so the list is one you can act on. No brand can pay to be included or moved up.
Forms and dosage
- Berberine
- Usually 500 mg per capsule, taken two to three times a day in studies.
- Cinnamon extract
- Ceylon or cassia; cassia contains more coumarin. The label should say which.
- Chromium (picolinate, polynicotinate)
- Measured in micrograms, commonly 200–1,000 mcg.
- Alpha-lipoic acid
- Commonly 300–600 mg per serving.
How much to take
Doses from studies, for comparison: berberine 500 mg two to three times a day, alpha-lipoic acid 300–600 mg, chromium 200–1,000 mcg. These can add to the effect of glucose-lowering medication.
Who it's for
Adults who want a clearly labeled ingredient and have discussed it with a clinician, especially if they take diabetes medication.
What to watch out for
Combining berberine or similar products with glucose-lowering drugs without advice, cassia cinnamon at high doses (coumarin), and blends that claim to "replace" medication.
All Blood Sugar Support products (1525)
1
DaVinci Laboratories Of VermontBerberine Force
892Davinci LaboratoriesBerberine Force
893Natures Plus KetoLivingSugar Control
884Metabolic MaintenanceAlpha Lipoic Acid 300 mg
885KyolicKyolic Blood Sugar Balance
886Nature's PlusEvening
877DaVinci Laboratories Of VermontCarb-Down With Phase 2 Carb Controller
878DaVinci Laboratories Of VermontCarb-Down
879NaturesPlusSugar Armor
8710OL Olympian LabsVanadyl Sulfate 20 mg
8611OL Olympian LabsVanadyl Sulfate
8612ecoNugenicsecoMetabolic
8513OL Olympian Labs Performance Sports NutritionVanadyl Sulfate-20
8514Planetary HerbalsCinnamon Glucose Balance 910 mg
8515Advanced Nutrition by ZahlerDiabetter
8316Triquetra Rx TherapeuticsGLP-Activate
8317Mason NaturalCinnamon Alpha Lipoic Acid
8118LifeSeasonsSecuri-T
8119Protocol For Life BalanceAlpha-Lipoic Acid 600 mg
8020Nature's AnswerGymnema Leaf
80Frequently Asked Questions
Can I take berberine with metformin?
Both can lower blood sugar, so the combination should be discussed with a clinician. Our score judges the label, not suitability for you.
Ceylon or cassia cinnamon?
Ceylon contains much less coumarin, which matters at the doses used in supplements. A good label names the type.
How are blood sugar support supplements ranked?
Products are ranked by SupplementScore, which evaluates label quality across four categories: dosage transparency (35 pts), label completeness (25 pts), formulation cleanliness (25 pts), and ingredient profile (15 pts). The score is based on data from the NIH Dietary Supplement Label Database, not marketing claims.
Does a higher score mean the supplement is more effective?
No. The SupplementScore measures label quality, how transparent, clean, and well-documented a product is. It does not measure clinical efficacy, bioavailability, or third-party testing. A higher score means better label practices, not guaranteed results.
How many blood sugar support supplements were analyzed?
We analyzed 1,525 blood sugar support products from the NIH DSLD database, which contains label data for over 116,000 dietary supplements sold in the United States.
This article is for information only and is not medical advice. Talk to a clinician before starting a supplement, especially if you are pregnant, take medication or have a health condition.