How to read a Supplement Facts panel properly
Five minutes with this guide will tell you more about a supplement than an hour of reading its marketing page.
The Supplement Facts panel is the only part of a supplement's packaging that is regulated for content. Everything else on the bottle is marketing. Learning to read the panel properly is the single highest-value skill for anyone buying supplements online.
Start with serving size, not the ingredients
Every amount in the panel is listed per serving, not per capsule. If the serving size is two capsules and the bottle holds 60, that is a 30-day supply, not 60 — and the impressive-looking amounts are split across two capsules rather than delivered in one.
This is the most common way a panel misleads without technically lying. Read serving size first, every time, before anything else registers.
Servings per container tells you the real price
Divide the bottle price by servings per container, not by capsule count. A cheaper bottle with a two-capsule serving is frequently more expensive per day than a pricier bottle with a one-capsule serving. This one calculation reorders most shortlists.
The percent daily value column
A percentage appears only for nutrients with an established daily value — vitamins and minerals, mostly. Ingredients showing a dagger symbol instead have no established daily value, which is a statement about regulation rather than a comment on quality. It is not a warning sign, and it is not a seal of approval either.
Proprietary blends hide the part that matters
When ingredients are grouped under a single blend name with one combined total, you learn what is in it but not how much of each. A blend can be almost entirely its cheapest component and still list an impressive-sounding ingredient at the top. Ingredients within a blend must be listed in descending order by weight, which is the one piece of leverage you have — whatever is last is present in the smallest amount.
The “other ingredients” line
Printed below the panel rather than inside it, this is where the capsule shell, fillers, flow agents and colourings live. It is also where most allergen surprises hide. If you avoid gelatin, particular allergens or specific additives, this line matters more to you than the panel above it.
Check the current Nervelin offer
Bundle pricing from $49 per bottle with a 60-day money-back guarantee. Confirm the current terms on the official checkout page.
See today's priceWhat a missing panel tells you
Sometimes a product's panel is not published anywhere before purchase. That is the situation with the product this site covers, and we flag it on its own page rather than filling the gap.
A missing panel does not make a product unsafe. It makes it uncheckable in advance, which is a different and more specific problem: you cannot compare it against research doses, and you cannot screen it against your own medication until the bottle is in your hand.
A two-minute routine when a bottle arrives
- Photograph the entire label, panel and other-ingredients line included.
- Check the serving size against what you assumed when ordering.
- Read the other-ingredients line for anything you avoid.
- Check the expiry date, especially on a six-month bundle.
- If you take medication, show the photo to your pharmacist — our question list makes that quick.
For the regulatory background, the NIH Office of Dietary Supplements consumer factsheet is the clearest source available.