Supplement Facts vs Nutrition Facts: what is different

A Supplement Facts panel and a Nutrition Facts label look alike, but they follow different rules. The FDA says the Supplement Facts panel must list dietary ingredients that have no Daily Value, may show the source of an ingredient and the plant part, and does not print "zero" amounts. A Nutrition Facts label for food does none of those things. The practical result: Supplement Facts is where you find out what is really in the capsule, and how much.

The details below come from FDA pages we opened (the Dietary Supplement Labeling Guide, FDA's supplement Q&A and the federal rule 21 CFR 101.36) and from the label data in our own reviews. This is general label-reading information, not medical advice. Ask a doctor or pharmacist what suits you.

Which products carry a Supplement Facts panel?

The FDA's labeling guide states it plainly: the nutrition label for a dietary supplement is called a "Supplement Facts" panel. A product counts as a dietary supplement when it contains a vitamin, mineral, herb or other botanical, amino acid, or a concentrate, extract or combination of those, is intended to be swallowed, is not presented as a conventional food or a whole meal, and is labeled as a dietary supplement. Foods and drinks sold as foods carry Nutrition Facts instead.

The FDA also lists what every supplement label has to carry: the product name with the words "dietary supplement" (or an equivalent term), the name and place of business of the manufacturer, packer or distributor, the Supplement Facts panel, a list of "other ingredients" not already shown in the panel, and the net quantity of contents. The agency notes exceptions to the panel for some small-volume products and products from eligible small businesses.

What are the main differences between the two labels?

The FDA's own comparison names several differences. Here they are in plain English:

• Ingredients with no Daily Value must be listed. Supplement Facts has to include dietary ingredients such as phosphatidylserine or an herbal extract, even though no official Daily Value exists for them. A Nutrition Facts label may not list them.
• The source can be named. A supplement may print "Calcium (as calcium carbonate)". A food label may not.
• The plant part has to appear. For botanicals, the label must say which part of the plant the ingredient comes from, such as root, leaf or rhizome. A food label may not list it.
• No "zero" lines. A supplement panel does not list a nutrient that is present only in an amount that rounds to zero. Food labels must show zeros.
• The serving is the recommended amount. For a supplement, one serving is the maximum amount recommended on the label per eating occasion. If the directions say to take 1 to 3 tablets with breakfast, the serving size is 3 tablets.

That last point matters when you compare doses. The amounts on the panel are for the whole serving, not for one capsule, so always check how many capsules the serving is.

How do amounts and Daily Values work on a supplement panel?

Under "Amount Per Serving" the panel lists each dietary ingredient with its weight. The FDA rule says the weight must be the weight of the nutrient itself, not of its source: you see the milligrams of calcium, not the milligrams of calcium carbonate. Percent Daily Value is calculated by dividing the amount by the established Daily Value and multiplying by 100. For ingredients without a Daily Value, the panel shows a symbol that points to the footnote "Daily Value not established".

You can see both patterns in real labels. The Whispeara review records "Chromium (as chromium picolinate)" at 0.7 mcg, listed as 2% of the Daily Value, which is the source-in-parentheses format the FDA describes. Our Longevity Activator review shows what a complete panel looks like: an exact milligram amount for every one of its 14 ingredients. That is what the rule is meant to deliver, and it lets us compare each dose with research. In that review, nearly every dose sits at a fraction of what the cited studies used. A complete panel is a precondition for judging a dose, not proof that the dose is good.

Where do proprietary blends fit in?

The FDA allows a proprietary blend on a Supplement Facts panel under the term "Proprietary Blend" or a descriptive or fanciful name. The panel must show the total weight of the blend on the same line, and the ingredients inside it must be listed in descending order of predominance by weight. FDA's Q&A states the catch: except for ingredients that are part of a proprietary blend, the panel must give the amount per serving. So a blend can legally hide the split between ingredients, though not the total.

The Synadentix review is a clean example. Ten of its ingredients sit in one 400 mg blend, and xylitol appears under other ingredients with no amount. Because blend ingredients are listed by weight, you know the first is the largest, but you cannot tell whether any of them reaches an amount used in research. Our how we review page explains that when amounts are hidden inside a blend, we say so.

What does the "Other Ingredients" line add?

Ingredients not shown in the panel go in a separate list directly beneath it, headed "Other Ingredients". FDA says this is where source ingredients (if not shown in the panel), fillers, binders, flavors, sweeteners, colors and preservatives appear, such as gelatin, starch and stabilizers, in descending order by weight. When a product shows all its sources in the panel and has nothing else in it, no ingredient statement is needed. For anyone with allergies or sensitivities, this line is as important as the panel.

What if the sales page shows no panel at all?

A sales page is not the bottle. Some pages never show the Supplement Facts image, and the bottle may carry it anyway. In our reviews we flag it when we cannot find one. We found no Supplement Facts label anywhere on the page or linked images for the Nerve Soothe review, and the Java Brain review notes no panel or serving-size breakdown either. That means the ingredients can be named but not checked against any studied dose.

The FDA's advice, if you want more detail than the label gives, is to contact the manufacturer directly, using the name and address on the label. Before you pay, send a short message and ask for a photo of the Supplement Facts panel and the other-ingredients list for the exact product you would receive. A seller that cannot send one is telling you something. Our ClickBank refund guide explains how to ask for your money back if what arrives is not what the page described.

A short checklist for reading any panel

1. Look for the title "Supplement Facts". If you see "Nutrition Facts" on something sold as a supplement, ask why.
2. Check the serving size, and how many capsules, scoops or drops it is.
3. Find each ingredient's amount, and note which ones sit inside a blend.
4. Look for the source in parentheses ("as ...") and the plant part for botanicals.
5. Read "Other Ingredients" for fillers and allergens.
6. Compare the label with the sales page: do the same ingredients appear?
7. Screenshot it before you buy, in case the page changes.

FAQ

Is a Supplement Facts panel approved by the FDA?

No. The FDA says it does not approve dietary supplements before they are marketed. The panel is the maker's own declaration, and manufacturers and distributors carry the first responsibility for its accuracy.

Do all supplements have to carry a Supplement Facts panel?

Almost all do. The FDA's Q&A notes exceptions for some small-volume products and those made by eligible small businesses. If a normal-sized bottle from a large seller has no panel, treat it as a red flag and ask.

Does the label amount have to be accurate?

The FDA's labeling guide says that for dietary ingredients that are specifically added, the product must contain 100% of the amount declared, apart from deviations due to the analytical method. Naturally occurring ingredients must be present at 80% of the declared value. Products below that would be misbranded. The FDA also notes that, apart from the maker's duty to meet safety standards, no law or regulation limits how much of an ingredient a serving may contain; that choice belongs to the maker.

Why does the panel say "Daily Value not established"?

Because no official reference amount exists for that ingredient, as with most herbal extracts. It does not mean the amount is low or high. It only means there is no percentage to compare against.