The Supplement Facts panel is the most important document for any supplement. Marketing pages can highlight ingredients without telling you how much is inside.
Supplement Facts Basics
Look for serving size, servings per container, each ingredient with its amount, the plant part and extract ratio, and the “other ingredients” such as water, glycerin or alcohol.
Liquid Drops: Serving Size Matters
For liquids, check whether the serving is a single drop, a dropper (about 1 mL) or more, and how many milligrams of each extract that delivers. A 60 mL bottle shared across nine ingredients may provide small amounts of each.
Proprietary Blends
A proprietary blend lists a total weight but not how much of each ingredient it contains. That is legal, but it prevents comparison with study doses.
Extract Ratios and Standardization
“Pine bark extract” can mean very different products. Standardization (for example, a stated procyanidin percentage) is what links a product to clinical studies.
“FDA Approved” Is Not a Supplement Claim
The FDA does not approve dietary supplements before they are sold. “FDA-registered facility” and “GMP certified” refer to manufacturing, not proof that a product works.
60-Second Checklist
- Is every ingredient dose shown?
- Is the serving size clear and consistent with the directions?
- Is the evidence for the same outcome you care about?
- Are there warnings for pregnancy, medications or surgery?
- Is the refund policy written down?
Sources & References
We prioritize primary product information, regulatory sources, peer-reviewed research and recognized clinical guidance. Seller claims are not treated as independent clinical evidence.
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Editorial owner: JointVive Reviews Editorial Team · Last reviewed: November 13, 2026