Brain Supplement Label Comparison Worksheet

By SterlingMedicalCenter.org Editorial Team

If you've pulled up two or three “brain health” supplement labels and tried to compare them side by side, you've probably run into the same wall most people do: the labels don't make it easy. One product lists milligrams per capsule, another lists milligrams per serving of two capsules, a third buries the actual dose inside a “proprietary blend” with no individual breakdown at all. None of this is necessarily dishonest — but it does mean the comparison work falls on you.

This worksheet doesn't tell you which product to buy. It gives you a consistent way to pull the same information off any label, so you're comparing like with like instead of guessing.

What This Page Can Settle — and What It Can't

This page can help you extract and organize the information a label discloses: ingredient names, per-serving amounts, how serving size is defined, and what kind of evidence (if any) is referenced for a claim. It can also help you spot when that information is missing or structured in a way that makes comparison harder than it should be.

What it can't do is tell you whether a specific ingredient or dose is right for you, independently verify a company's manufacturing claims, or substitute for a conversation with a pharmacist or physician — especially if you take other medications. Ingredient interactions and your own health history aren't things a worksheet can evaluate.

Step One: Find the Full Serving Size, Not Just the Per-Capsule Number

The most common source of confusion on brain supplement labels is the gap between “per capsule” and “per serving.” A label might list an ingredient at 200 mg, but if the serving size is two capsules, the full-serving amount is actually 400 mg. Read the wrong line and you'll misjudge what you're really taking — in either direction.

Before recording any amount, confirm:

How many capsules, tablets, or scoops make up one labeled “serving”
Whether the ingredient amounts shown on the panel are per capsule or per full serving
Whether the “suggested use” instructions match the serving size used in the ingredient panel

If a label doesn't make this clear, note that as a gap on your worksheet rather than assuming the larger or more favorable number.

Step Two: Separate Named Ingredients From Proprietary Blends

Supplement labels generally disclose ingredients one of two ways: individually, with a specific amount listed next to each one, or grouped into a “proprietary blend” with only a combined total weight shown. The second format tells you the blend contains, say, 500 mg of several ingredients combined — but not how those 500 mg are divided among them.

For each product you're comparing, record:

Which ingredients have an individually disclosed amount
Which ingredients are only listed inside a blend total
Whether the blend's ingredient order gives any indication of relative amounts (ingredients are typically listed in descending order by weight, though this doesn't guarantee a meaningful dose for ingredients near the bottom of the list)

Neither format is automatically a red flag on its own — but a blend-only label makes true dose comparison across brands much harder, and that limitation is worth recording before treating two products as equivalent.

Step Three: Note What Kind of Evidence Is Referenced, If Any

Some labels or product pages reference research to support an ingredient's inclusion. When they do, the goal is to record exactly what's being cited — not to assume the citation applies more broadly than it does. A study on a specific ingredient at a specific dose, in a specific population, doesn't automatically say anything about a different product using a smaller dose of that ingredient combined with four others.

For each research-backed claim, try to capture:

The specific ingredient and dose the research actually examined
The population studied, where available (age range, health status, sample size)
Whether the study measured the same outcome the marketing claim implies
How the studied dose compares to the dose actually present in the product you're evaluating

If a product page makes a claim without pointing to any specific study, record that as a gap rather than filling it in with an assumption.

Step Four: Check What's Verified Versus What's Self-Reported

Dietary supplements in the U.S. are regulated as a category of food, not as drugs. Under the Dietary Supplement Health and Education Act of 1994, manufacturers are not required to prove a supplement safe or effective before it reaches shelves, and the FDA does not review or approve supplement formulas before marketing. The agency's authority is primarily after-the-fact: it can act against a product found to be unsafe, contaminated, or mislabeled once it's already on the market. Separately, the FDA does require supplement manufacturers to follow Good Manufacturing Practice regulations covering how products are produced and tested for identity, purity, and strength — but following those regulations is the manufacturer's own responsibility, and the FDA does not inspect or certify every batch.

This is why third-party verification, when a brand has it, is one of the more concrete things you can check. Look for and record:

Whether the product carries a third-party testing seal (such as NSF, USP, or ConsumerLab) and what that seal actually certifies — identity, purity, label accuracy, or some combination
Whether the manufacturer discloses which facility made the product and whether that facility is identified as following Good Manufacturing Practice standards
Whether any testing claims on the label are backed by an independent third party or are only the company's own statement

A product can be legitimate without third-party certification — most supplements on the market don't have it, and its absence isn't proof of a problem. But when certification from an independent organization is present, it's one of the few label elements that isn't simply the manufacturer describing itself.

Putting the Worksheet Together

For each product you're comparing, a simple column format works: ingredient name, disclosed amount (and whether it's per capsule or per full serving), blend status, evidence cited if any (with population and dose studied), and third-party certification status. Filling this out side by side for two or three products usually surfaces the real differences — and the real gaps — faster than reading each label on its own.

Next Step

Once your worksheet is filled in, the most useful next move is bringing it to a pharmacist or physician, particularly if you take other medications. Label comparison can tell you what a product contains and what's been claimed about it, but it can't tell you how an ingredient interacts with your own health profile. A label that discloses full per-serving amounts, breaks out individual ingredients rather than burying them in a blend, and carries independent third-party testing gives you a stronger starting point for that conversation than one that leaves those questions unanswered.

For related reading on evaluating similar claims in an adjacent category, see our coverage of Adderall alternatives, which walks through a related but distinct set of label and evidence questions.