Supplement label reader
Paste the panel from the back of any bottle. This reads it back to you, with the %DV column worked out and the other ingredients separated from the actives.
Paste the Supplement Facts panel, including the serving size line, and it will be read back to you.
How it works
- Paste the Supplement Facts panel, including the serving size line and the other ingredients list. The parser reads amounts, units and percentages per row.
- It separates the actives from the other ingredients, which is where capsules shells, fillers and anti-caking agents live. Those are not secret, but they are not what you are buying either.
- It works out the percent Daily Value for any nutrient it recognises, so you can compare two bottles that print in different units.
Before you use the number
- The parser reads text; it does not check a formula for safety or for whether the amounts make sense. It is a reading aid, not an assessment.
- A proprietary blend printed as one total is shown as one total, because splitting it would be inventing numbers. That is a limitation of the label, not of the reader.
- If a panel is illegible or looks altered, ask the brand for the specification sheet rather than guessing.
This is general information, not medical advice, and it does not replace your prescriber or a dietitian who knows you.
Questions people ask
What should I look for first on a supplement label?
The serving size, then whether the amounts are per serving or per capsule, then the form of each nutrient. A bottle that says 1,000 mg of something without saying which salt it is has told you very little.
What does proprietary blend mean?
The manufacturer prints one total weight for the blend rather than each constituent's amount. It is legal and it is common, and it means you cannot tell how much of any single ingredient you are getting. A brand that prints every amount is telling you more.
Are other ingredients a problem?
Not usually. Capsule shells, rice flour, silicon dioxide and magnesium stearate are standard and present in small amounts. They matter if you avoid gelatin for dietary reasons, which is why the capsule material is worth reading.
Sources
- FDA, Dietary Supplement Labeling Guide (what a Supplement Facts panel must carry)
- FDA, Daily Value reference amounts for the Supplement Facts label
Figures checked against the sources above on 21 September 2026.
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