Why do companies use proprietary blends?

While companies claim it protects trade secrets, it is often used to mask underdosing of expensive active ingredients.

Where on the bottle can I check manufacturing quality?

Look below the Supplement Facts panel for cGMP certification, manufacturing origin (e.g. "Made in USA in an FDA-inspected facility"), and independent testing seals.

Supplements & Wellness Products

April 10, 2026 1 min read Evidence-Informed

How to Read a Supplement Label Like a Skeptic: 5 Red Flags

Supplement packaging is designed by marketing teams to drive retail sales. Learning how to read the Supplement Facts panel protects your wallet and your health.

5 Red Flags on Supplement Bottles

1. Proprietary Blends: A grouped cluster of ingredients with only one combined weight listed. Manufacturers often use this to hide underdosed expensive ingredients.
2. Deceptive Serving Sizes: An advertised "1,000 mg" on the front label that actually requires swallowing 4 large capsules.
3. "Clinically Proven" Without Citations: Claims that cite in-vitro (test tube) or animal studies rather than randomized human trials.
4. Artificial Dyes & Fillers: Unnecessary titanium dioxide, FD&C Yellow #5, or hydrogenated oils in capsule fillers.
5. Outrageous Cure Claims: Any dietary supplement claiming to "cure," "treat," or "prevent" medical diseases violates FDA regulations.

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Written by HealthinSnap Editorial Board

Evidence-Based Clinical & Health Research Team

Last reviewed: March 19, 2026