How to Read a Supplement Label in 60 Seconds

The supplement aisle is built to confuse you. Bright colors, athletic photography, words like "advanced," "elite," "matrix," and "complex" doing most of the heavy lifting. The actual information is on the back of the bottle, and most people glance at it for three seconds, register that some of the ingredients sound familiar, and put it in the cart.

Sixty seconds is enough to do better. Here is the scan we run on every product we consider — including our own — before we trust it with anything.

Step 1: Find the Supplement Facts panel

Ignore everything on the front. The marketing on the front of a bottle is regulated less strictly than the marketing on a cereal box. The information that matters is in the Supplement Facts panel, almost always on the back or side. If the product does not have a properly formatted Supplement Facts panel, put it back on the shelf — you are looking at something that is being sold under a category that does not require what you are about to do.

Step 2: Check the serving size against the label claims

Look at the top of the panel. You will see "Serving Size" — usually 1 capsule, 1 scoop, or 2 capsules. Then look at "Servings Per Container."

The trick brands play here is inflating the doses on the front of the bottle by counting multiple servings. A label that says "5 grams of creatine!" on the front and lists serving size as 2 scoops on the back is telling you that you have to take 2 scoops to get 5 grams. If you only ever scoop once, you are getting 2.5 grams.

This compounds with cost. A 30-serving tub at 2 scoops per serving is a 15-day supply. The "great deal" you saw is half the size you thought it was.

60-second check: Compare the front-of-label dose to the per-serving dose on the back. If they only match at multi-scoop or multi-capsule servings, the front of the bottle is doing math you should not be doing for them.

Step 3: Look for proprietary blends

Anywhere in the panel, scan for the words "proprietary blend," "matrix," "complex," or "formula" followed by a single weight (e.g., "Performance Matrix — 2,400 mg") and a list of ingredients underneath without individual doses.

That is a proprietary blend. It is legal, it is common, and it is the most reliable underdosing signal in the industry. The brand is hiding individual ingredient amounts because if they disclosed them you would not buy it. We have written a whole post on why proprietary blends are where underdosing hides — short version: avoid.

60-second check: If you see a single weight covering multiple ingredients with no individual breakdown, the product fails the scan. Move on.

Step 4: Verify the active ingredients hit clinical doses

This is the step most people skip because it requires knowing the actual research dose for the ingredient. You do not need to memorize all of them. You need to know the dose for the few ingredients that brought you to the bottle in the first place.

Some common ones, for reference:

• Creatine monohydrate: 3–5 g per day. Anything under 3 g is below the maintenance dose. (We have a longer post on creatine dosing covering loading protocols and the patterns most products use to underdose.)
• Beta-alanine: 3.2–6.4 g per day. Most pre-workouts contain 1.6 g — half a clinical dose.
• L-citrulline (or citrulline malate 2:1): 6–8 g per day for the pump effect. Below 4 g, you are not getting the documented benefit.
• Caffeine: 3–6 mg/kg bodyweight pre-workout. For a 75 kg person that is 225–450 mg.
• Ashwagandha (KSM-66 or Sensoril): 300–600 mg of the standardized extract.
• L-theanine: 100–200 mg, ideally paired 1:2 with caffeine.
• Magnesium (elemental, glycinate or threonate): 200–400 mg elemental.
• Vitamin D3: 1,000–4,000 IU per day depending on baseline status.

If the label discloses the ingredient at a dose well below the clinical research dose, the brand is fairy-dusting — adding just enough of the ingredient to put it on the label, not enough to do what the research says it does. This is the second most common form of underdosing after proprietary blends.

60-second check: Pick the two ingredients that brought you to the product. Look up their clinical dose ahead of time (or trust a source you trust). Verify the label hits it.

Step 5: Check for third-party testing or a Certificate of Analysis

Look on the front, the side, the back, and the brand's website for evidence of third-party testing. Common marks: NSF Certified for Sport, Informed Sport, Informed Choice, USP Verified, ConsumerLab. A serious brand will also publish a Certificate of Analysis (COA) for each batch, either by lot number on the website or on request.

What this is checking: that the contents of the bottle match the contents claimed on the label, and that the product is free of banned substances (relevant for athletes), heavy metals, microbial contamination, and adulterants.

You do not need every product to be NSF Certified. Many small honest brands cannot afford the certification. But you should be able to find some form of independent verification — a published COA, a posted lab report, a contamination-screening statement. A brand that cannot point to any independent verification is asking you to trust them on faith. Faith is not how you should buy ingestibles.

60-second check: If you cannot find any reference to independent testing on the label or the brand's website, the product fails the scan.

Step 6: Read the "Other Ingredients" line

This is the one almost nobody reads, and it is where some of the most informative content lives.

The "Other Ingredients" line discloses everything in the product that is not an active ingredient — the binders, fillers, flow agents, colors, and excipients. Some of what shows up here is fine and unavoidable (capsule shells made of vegetable cellulose or gelatin, microcrystalline cellulose as a flow agent in small amounts). Some of it is signal that the brand is cutting corners.

What we look for and avoid where possible:

• Magnesium stearate — a flow agent. Common, generally regarded as safe at the amounts used, but its presence in large quantities can suggest the manufacturer is cutting cost on tabletting equipment
• Titanium dioxide — a whitener and opacifier. Banned as a food additive in the EU as of 2022. Avoidable
• Artificial colors (FD&C dyes) — no functional reason to be in a supplement; cosmetic only
• Sucralose, acesulfame potassium — fine in moderation; worth knowing if you are sensitive
• "Natural and artificial flavors" — a black-box term. Not necessarily bad, but a fully transparent brand will tell you what the flavor system is

A clean Other Ingredients line tells you the formulator cared. A long one full of cosmetic additives tells you the formulator was optimizing for shelf appearance.

The 60-Second Card

For the next time you are in the aisle:

1. Go straight to the Supplement Facts panel — ignore the front
2. Check serving size — make sure the front-of-label claim is achievable in one serving
3. Scan for proprietary blends — fail if present
4. Verify clinical doses on the two ingredients you actually care about
5. Find third-party testing — or at minimum a Certificate of Analysis
6. Read Other Ingredients — short and functional is good; long and cosmetic is a signal

If the product passes all six in 60 seconds, it is worth a closer look. If it fails any one of them, you have your answer without spending another minute.

This is the scan we run on our own products before they ship. We think you should run it on ours too. The whole point of building a supplement brand worth trusting is that the label survives this exact 60-second test — and we would rather lose a sale to a skeptical reader than make a sale to a confused one.