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WellnessChecked · July 2026
How to Read a Supplement Label — Complete Guide 2026
How to read a Supplement Facts panel: serving size, individual doses, proprietary blends, ingredient forms and what a cGMP statement does and does not tell you.
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⚡ Quick AnswerLast Reviewed: October 2026
Check five things on any supplement label: the serving size (how many capsules make one dose), each ingredient's individual amount rather than a combined proprietary blend, the specific form or branded extract used, the "Other Ingredients" list for allergens and animal-derived capsules, and whether doses match what was used in published studies. A cGMP statement means the maker says it follows FDA manufacturing rules; it is not FDA approval.
The Supplement Facts Panel
US dietary supplements must carry a Supplement Facts panel listing the serving size and the dietary ingredients. Start with the serving size at the top: some products list impressive amounts that only apply if you take four or more capsules at a time, and some allow one or two servings a day, which doubles everything.
The Proprietary Blend Problem
A proprietary blend lists several ingredients under one combined amount (for example, "Testosterone Support Complex 850 mg"). Blends are legal and common, but they hide how much of each ingredient you get, so you can't compare the doses with research. We treat full dose disclosure as a plus in our reviews.
Ingredient Form Matters
"Ashwagandha root extract" vs "KSM-66 ashwagandha" — KSM-66 is a branded root extract standardized to 5% withanolides with its own small trials; research on one extract doesn't automatically apply to another.
"Citicoline" vs "Cognizin citicoline" — Cognizin is a branded citicoline with a few small trials, mostly supported by its maker.
"Resveratrol" vs "trans-resveratrol" — trans-resveratrol is the form most used in research and in supplements; check the amount per serving.
Mineral forms — for example, magnesium oxide is less completely absorbed than forms such as citrate or aspartate.
Other Ingredients and Manufacturing Claims
The "Other Ingredients" line shows capsule material (gelatin or vegetable cellulose), fillers, colors and possible allergens such as fish or soy. A "cGMP" or "made in a GMP facility" statement means the company says it follows the FDA's manufacturing rules for supplements, which all US makers are legally required to do; it is not an FDA approval of the product or its claims.
Check the serving size, each ingredient's individual amount (not hidden in a proprietary blend), the specific form or branded extract, the other ingredients for allergens, and whether the doses match those used in published studies.
A single combined amount for several ingredients, without the individual doses. It is legal, but it means you can't tell whether each ingredient is present at a useful amount.
Different extracts and forms of the same plant or nutrient can differ in standardization and absorption, and research on one branded extract doesn't automatically apply to others.
The amount that counts as one dose, often several capsules. All the amounts on the panel are per serving, so check how many capsules that is and how many servings a day the directions allow.
Check the other ingredients for allergens (such as fish, soy or gluten), animal-derived capsules if you avoid them, and colors or additives you prefer to skip. Fewer unnecessary extras makes a label easier to judge.
Disclaimer: For informational purposes only. Dietary supplements. Not evaluated by FDA. Not intended to diagnose, treat, cure or prevent disease. Individual results vary. Full disclaimer →
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