Supplement Facts Panels: The Label Rules That Trip Up New Brands

The Supplement Facts panel looks like a form. Fill in the boxes, match the template you saw on a competitor’s bottle, send it to print. That impression is exactly why it’s the most-cited part of a supplement label. It isn’t a form; it’s a regulated document with fixed units, a prescribed order, math you don’t get to round the easy way, and a hard rule about proprietary blends. The mistakes are small and specific: an “IU” carried over from a supplier’s paperwork, a Daily Value from the old label, an ingredient placed first because marketing wanted it there. Each one is subtle enough to survive a proofread and serious enough to draw a warning letter or a marketplace takedown. This is the panel, rule by rule, from the floor of a shop that builds them.

Short answer: A dietary supplement label carries a set of required statements, and the Supplement Facts panel inside it has strict rules: the heading must read “Supplement Facts,” vitamins A, E, and folate must use mcg (not IU), Daily Values must be the current ones and rounded in prescribed increments, and a proprietary blend must show its total weight with ingredients in descending order by weight. Most errors trace to a panel drafted off old paperwork or an early formula rather than the one you actually manufactured. Verify current requirements with your regulatory counsel before you print.

Best for: Brand owners and founders finalizing label artwork before a print run or a marketplace listing.

Key decision: Whether your Supplement Facts panel is built from the final manufactured formula and checked against the certificate of analysis, or copied from a template and hoped through review.

Apollo path: Apollo builds the panel from the formula it actually runs and provides label and claims review support against the formula and the COA; your counsel decides what’s legally sufficient. Request a Manufacturing Quote → /quote

Educational overview: not legal, regulatory, or medical advice. Requirements change and vary by jurisdiction and sales channel. Last reviewed July 2026.

One boundary up front. This explains how the labeling rules work and where brands trip; it is not legal advice, and label and claim decisions belong to your regulatory counsel. Every regulatory point below was checked against the primary source (FDA’s regulations in Title 21 of the Code of Federal Regulations) as of mid-2026, and those rules change. Apollo provides label and claims review support from the manufacturing side. We support; your counsel decides.

The required label statements: the honest version of “nine elements”

Search “supplement label requirements” and you’ll be told there are nine mandatory elements. Search again and another page says seven, or five. The count is fuzzy because FDA doesn’t publish a numbered list of nine. What the regulations actually require is five label statements, plus a few items required only when they apply; guides pad the five up to nine by counting the conditional pieces separately. The number is marketing; the requirements are the regulation. Here is the accurate set.

The first five are non-negotiable on every supplement. The last two are the ones a template misses, because they depend on your formula. If your product contains milk, soy, tree nuts, wheat, egg, fish, shellfish, peanuts, or sesame, or runs on shared equipment, the allergen declaration is not optional. The rest of this article lives inside row three: the Supplement Facts panel, where the rules are densest and the errors most expensive.

Inside the box: what the Supplement Facts panel must show

The panel has a required anatomy. Miss a piece and the whole label is out of compliance, no matter how good the product is.

• The heading is “Supplement Facts,” not “Nutrition Facts.” Foods use Nutrition Facts; supplements use Supplement Facts. Under 21 CFR 101.36(e) the title is “set in a type size larger than all other print size in the nutrition label” and bolded. Copying a food label’s box is a visible, immediate error.
• Serving size, in a term that fits the form. Directly under the heading comes “Serving Size,” expressed the way the product is taken: “1 Softgel,” “2 Capsules,” “1 Teaspoonful.” It has to match the directions elsewhere on the label; if the directions say two capsules and the panel says one, that’s a mismatch.
• Servings per container. How many servings the package holds, unless the net-quantity statement already makes it clear.
• “Amount Per Serving.” The quantitative amounts sit under this heading, or a form-appropriate version of it. The regulation explicitly allows “Each Tablet Contains” or “Amount Per 2 Tablets” in its place.
• The order of ingredients is fixed. Vitamins first, then minerals, in the order FDA sets: not alphabetical, not by dose, not by marketing priority. After the nutrients with established Daily Values come the “other dietary ingredients”: herbs, amino acids, botanicals, and the like.
• The % Daily Value column. For nutrients that have a Daily Value, the panel shows the percentage. For the ones that don’t (most botanicals and specialty ingredients), it carries a symbol and the footnote “Daily Value not established.”

Put together, a compliant panel skeleton looks like this:

† Daily Value not established. Illustrative skeleton only, not a template. Your panel’s contents, units, and values depend entirely on your formula.

Notice three things that new brands get wrong even when the layout is right: vitamin D shows mcg with IU in parentheses (more on units next), the proprietary blend shows a total with its ingredients indented underneath, and the botanical ingredients name their plant part. Each is a rule, not a style choice.

The units trap: why “IU” on your label starts on your supplier’s paperwork

This is the single most common technical error on new supplement labels, and it has a traceable origin.

FDA’s 2016 overhaul of the Nutrition and Supplement Facts labels changed the required units of measure for several vitamins, with compliance dates that passed in 2020 and 2021. International Units (“IU”) are no longer accepted for vitamin A, vitamin E, or folate. Vitamin D is the lone exception: it’s declared in micrograms, and IU may appear only in addition to the required mcg, never instead of it. As of mid-2026, under 21 CFR 101.9(c), the required units are:

Here’s why brands keep printing the old units anyway: their raw-material suppliers still report potency in IU. A vitamin A oil, a vitamin E blend, a vitamin D premix: the certificate of analysis that arrives with the ingredient is very often written in International Units, because that’s how the raw-material trade has always specified them. The brand reads “10,000 IU” off the supplier’s CoA and copies it onto the label. The error isn’t invented at artwork; it’s inherited from upstream, and it slides through because it looks like it came from a document.

The fix is a deliberate conversion, and the factors differ by nutrient and by the specific form of the ingredient (retinol versus beta-carotene, natural versus synthetic vitamin E), which is why it’s a formulation-and-labeling step, not a find-and-replace. A manufacturer building the panel from the formula catches this, because to them the formula and the panel are the same document. A brand converting a supplier’s IU figure alone, under a print deadline, is where the misconversions happen.

Daily Value math: the current values, and the rounding you can’t skip

Two Daily Value errors show up over and over, and the popular label guides get one of them wrong.

Use the current Daily Values. The 2016 rule didn’t only change units; it updated the Reference Daily Intakes the percentages are calculated against. A panel built from a pre-2020 template, or from an old bottle, may be calculating % Daily Value against reference numbers FDA retired years ago, so the percentages come out wrong. If you inherited your panel from a prior product or a competitor’s photo, the reference values are the first thing to re-check.

Round in the prescribed increments, not to whole percent. This is where secondary guides mislead. Several widely-read pages state that % Daily Value is rounded “to the nearest 5% above 10% and the nearest 1% at or below 10%.” That is not what the regulation says. Under 21 CFR 101.9(c)(8)(iii), verified as of mid-2026, the % Daily Values for vitamins and minerals are:

• expressed to the nearest 2% increment up to and including 10%,
• the nearest 5% increment above 10% up to and including 50%, and
• the nearest 10% increment above 50%.

So an ingredient that calculates to 27% of its Daily Value cannot be printed as “27%.” It sits in the 10-to-50 band, where the increment is 5%, so the panel must read 25%. A nutrient at 6% stays 6% (already on a 2% increment); one at 63% rounds to 60%. And when a value would round to zero but the nutrient still has to be declared, the panel shows “Less than 1%” or “<1%,” not “0%.” Print the raw quotient off your spreadsheet and you’ll be non-compliant on any nutrient that rounds to a different increment: a small error, but a real one that reviewers can spot against the declared amount.

The upshot: the % Daily Value column isn’t a number you eyeball. It’s derived from the declared amount, the current reference value, and the rounding rule for the band the value falls in: arithmetic to run against the actual formula, not to copy off another bottle.

Proprietary blends: the “hero ingredient first” violation

Proprietary blends are legal, and they’re where labeling discipline slips most often, usually for reasons that have nothing to do with law and everything to do with marketing.

The rule is specific. Under 21 CFR 101.36(c), a blend gets a name (“Proprietary Blend” or a descriptive or fanciful one), and the total quantitative amount by weight of all its dietary ingredients is declared on that line. Underneath, the ingredients are listed, indented, in descending order of predominance by weight. You disclose the total and the order; you may keep the individual amounts private. That’s the trade a proprietary blend makes.

The violation is almost always the order. Marketing wants the recognizable, on-trend ingredient listed first (the one the front of the bottle is selling), even when it’s present in the smallest amount. But panel order is a factual claim about weight: if ingredient A appears above ingredient B, you are stating there is more A than B per serving. List the hero first when it’s actually the least-present, and the panel is false, whatever the intent.

Two things expose it. A finished-product test: an independent lab can find that the declared order doesn’t match the measured contents, or that the total weight doesn’t add up. And the panel-to-formula check: line the blend order up against the formula’s actual weights and a mismatch is obvious. Both are avoided by building the panel from the real formula and ordering the blend by the weights you actually used: the through-line of every rule on this page.

Botanicals, allergens, and the details a template forgets

The panel’s less-glamorous rules are the ones that draw letters precisely because brands skip them.

Botanical part naming. For a botanical dietary ingredient, the panel or ingredient list has to specify the part of the plant the ingredient comes from: root, leaf, bark, seed. “Ashwagandha” alone is incomplete; “ashwagandha (root)” is what the rule (21 CFR 101.36(d), which points to the ingredient-labeling rules in 101.4) is looking for. The Latin binomial is permitted but not required. Part naming matters because the same plant yields different constituents from different parts, so “which part” is a genuine identity statement, and one of the first things a knowledgeable reviewer checks.

Allergen declaration. Dietary supplements are food, so the Food Allergen Labeling and Consumer Protection Act (FALCPA) applies. Major food allergens present in the product must be declared: within the Supplement Facts or ingredient listing, or in a separate “Contains” statement with the ingredient list (e.g., “Contains: soy”). The list grew to nine when the FASTER Act added sesame, effective January 1, 2023. A gelatin softgel, a soy-derived ingredient, a wheat excipient, a shared line: any can trigger a declaration, and it’s a common miss on products whose “active” isn’t itself an allergen.

“FDA-approved” is not a phrase that belongs on the label. It shows up in the surrounding artwork more than the panel, but it draws the same enforcement attention: no dietary supplement is FDA-approved (not the product, the label, or the facility), so the phrase is false however it’s used. That distinction, and the structure/function claims that are permitted with the required disclaimer, are their own subject: no supplement is ‘FDA-approved’, and what you can and can’t say on a label. The panel states facts about content; claims live elsewhere and follow their own rules.

The mismatch that deactivates listings: label, panel, and COA telling the same story

Everything above is a rule about the panel in isolation. The error that actually pulls products off the shelf is a rule about consistency: the label, the manufactured formula, and the test results all have to describe the same product.

A marketplace reviewer (Amazon’s systems most visibly) compares what your listing and packaging claim against what the product is and what your documentation shows. A panel that lists an ingredient the formula doesn’t contain. A serving size that doesn’t match the fill. A declared amount the certificate of analysis doesn’t confirm at release. Any of these is a mismatch, and mismatches deactivate listings. The maddening part: the product can be entirely clean in the bottle and still fail, because the paperwork disagrees with itself. That’s the mismatch that deactivates a marketplace listing, and it’s a manufacturing problem far more often than a legal one.

The fix is the instruction this whole article keeps returning to: build the panel from the final manufactured formula. When the label is drafted off an early bench formula and the formula then changes (a flavor adjustment, an excipient swap, an overage added), the panel drifts out of sync and nobody notices until a reviewer does. Three documents have to agree:

• The panel declares the amount.
• The certificate of analysis confirms the amount is actually there in the finished lot: the reason to know how to read a certificate of analysis and check that its numbers match your panel, not just that it says “PASS.”
• The formula is what both are built from.

Shelf life adds one more layer. A label claim is a promise for the life of the product, not just the day it was filled. Some actives degrade over time (faster in liquids than dry formats), so a panel amount has to still be met at expiration, which is why formulas carry formulation overage: more active at the start so the claim holds at the end. Set the panel number without accounting for that, and a lot that tested fine at release can fall below its own label later. Panel, CoA, stability data, and formula are one connected system; treating the panel as a standalone artwork task is what breaks it.

What your manufacturer reviews, and what your counsel signs off

There’s a clean division of labor here, and knowing it keeps you from paying a lawyer to check kerning or asking a co-packer to render a legal opinion.

Apollo works exactly that line. Our quality, testing, and documentation page lays out the label-review support and the third-party-lab CoAs behind it, and review is built into how a project runs: part of what a precise quote itemizes, not an afterthought. We read your panel against your formula and your CoA and flag what looks wrong from a manufacturing standpoint. We don’t tell you your claims are legally cleared; that’s your counsel’s call. The phrase we use, and mean: we support; your counsel decides.

A pre-print label check

Run this before artwork goes to the printer. It won’t replace your counsel’s review and it isn’t a compliance certification; it’s the manufacturing-side pass that catches the errors on this page before they’re printed ten thousand times.

• Header reads “Supplement Facts,” bold and larger than the rest of the panel, not “Nutrition Facts.”
• Serving size uses a form-appropriate term, matches the “Directions” elsewhere, and servings-per-container is consistent with the net quantity.
• Units are current: vitamins A, E, and folate in mcg RAE / mg / mcg DFE (no stray IU except vitamin D’s optional parenthetical), and each reconciles to a deliberate conversion from the supplier CoA, not a copy.
• Daily Values are the current reference values (not a pre-2020 template’s), and % DV is rounded in the right increments (2% up to 10, 5% from 10 to 50, 10% above 50) with “<1%” where needed.
• Nutrient order is vitamins, then minerals, then other dietary ingredients, not alphabetical or by dose.
• Proprietary blend shows its total weight with ingredients indented in descending order by actual weight: the hero ingredient sits only where its weight puts it.
• Botanicals name their plant part; allergen declaration is present for any major allergen in the formula or on shared equipment, sesame included.
• Panel, formula, and CoA agree on every declared amount: the three describe one product.
• No “FDA-approved” anywhere, and claim language is routed to counsel, not decided in the artwork file.
• The artwork file itself is print-ready: bleed, resolution, and dielines squared away, which is its own checklist once the panel content is right.

About this information

This article is an educational overview for brand owners and founders. It is not legal, regulatory, or medical advice. Dietary supplement labeling requirements (and the marketplace policies that sit on top of them) change frequently and vary by jurisdiction and by where and how a product is sold. Every regulatory point above was checked against the primary source (FDA’s regulations in Title 21 of the Code of Federal Regulations and FDA guidance) as of the review date, but regulations are amended and interpretations shift. Before you print a label, list a product, or rely on any point here, verify the current requirements with qualified regulatory counsel or a labeling professional. Apollo Future Labs supports the manufacturing side of compliance: building the Supplement Facts panel from your actual formula, checking it against the certificate of analysis, producing the batch records and testing documentation, and flagging what looks wrong from a manufacturing standpoint. Your counsel decides your compliance strategy. Current as of July 2026.