Guides
Guides: how to read a supplement label
Everything on this site starts in the same place: the ruled box on the back of the bottle. These two guides are written so that they work on any bottle rather than only on this one, and the seven-step method below is the one this desk runs before it writes a word about a product.
Three things live here. A guide to the nerve-support category, a guide to reading ingredient names, and the method both of them assume: how to read a supplement label in seven steps. None of the three is about buying anything. They are about reading a label rather than a sales page — which on this product is the difference between a bottle that says nerve support formula and a marketing graphic of the same bottle that says neuropathy support formula.
- Steps in the method
- Seven
- Where to start
- The Supplement Facts panel
- Arithmetic required
- One division
- Blend on this label
- 575 mg, six ingredients
- Printed amounts
- One — magnesium, 80 mg
- What it forces
- About 567.5 mg of one ingredient
- Left for the other five
- About 7.5 mg together
- Glossary terms
- Ten
The two guides
Both are reference pages rather than reviews. Both are written to be run on a bottle you are holding, and both use this product only as the worked example, because a worked example is the only way to show that a method survives contact with a real label.
The order to read them in is this page, then the names guide, then the category guide. The names guide teaches you to read a row. The category guide teaches you what the rows add up to, and why the word on the front of the bottle is a regulated choice rather than a marketing one.
How to read a supplement label in seven steps
Seven steps, in order, using nothing but the bottle and arithmetic a reader can do unaided. Steps one to five work on any supplement on any shelf. Step six is the one that decides this particular product, and most labels do not give you the chance to use it.
- 01Find the Supplement Facts panelIt is the ruled box on the back or the side of the bottle, headed Supplement Facts. Everything a dietary supplement is required to declare numerically lives inside that box, and nothing printed outside it carries the same weight. A front panel is a sales document; the ruled box is a declaration with rules attached to it. A product with no panel at all has told you the largest single thing about itself before you have read a word.
- 02Read the serving size before you read any numberEvery figure in the panel is per serving, so the serving size decides the size of all of them. On this label it is 1 Capsule, which makes the arithmetic unusually clean. Where a serving is two or three capsules, every declared milligram has to be divided by the number of capsules before it means anything about one of them. Read the serving first or every figure underneath it is the wrong size.
- 03Read the servings per container, and turn it into daysServings Per Container is the only honest denominator for how long a bottle lasts and for anything you later divide by it. Here it is 30, at one capsule a day, so a bottle is thirty days. That figure is also what tells you whether a multi-bottle pack will be finished before any return window closes — which on this product cannot be checked, because no window is published.
- 04Read every row that carries a percentage, and check the arithmeticA percentage in the right-hand column means a reference intake exists for that nutrient, and it is the one piece of a panel a reader can audit unaided. This panel declares Magnesium 80 mg at 19%. The NIH Office of Dietary Supplements gives the Daily Value for magnesium as 420 mg, and 80 ÷ 420 = 19.05%. The label’s own arithmetic is correct, and that matters more than it sounds.
- 05Find the blend line, note its total, and count the names under itA proprietary blend is permitted to declare one total weight and withhold every individual amount, and the total must be printed on the same line as the blend’s name. Here it is 575 mg, with six names indented beneath it. A total set against a count is not a formula, but it is a bound: six names sharing 575 mg is a different proposition from two names sharing it.
- 06Ask whether any declared nutrient is sourced from inside the blendThis is the step most readers never reach, and on this label it is the step that decides everything. The magnesium row reads (as Magnesium Glycinate from proprietary blend). A declared element attributed to a named compound inside the blend lets you work backwards from the element to the weight of the compound, and that weight comes out of the blend total. The chemistry is set out in the category guide.
- 07Read the Other Ingredients line and the caution block last, and read them properlyThe Other Ingredients line sits under the panel and declares the capsule shell and the excipients — here hypromellose, microcrystalline cellulose, magnesium stearate, stearic acid and silicon dioxide. The caution block is the part of a label written for your body rather than for your wallet. On this product it is complete: a dose limit, an age limit, pregnancy and nursing, medication and medical conditions.
The method, run on this panel
Here is the same seven steps against the Neuralisse panel, step by step, with nothing added and nothing corrected. It takes about four minutes with the bottle in hand.
| Step | What this panel gives |
|---|---|
| 1. Find the panel | Present, ruled, headed Supplement Facts, with a panel code printed under it. It is on the right-hand third of the label wrap. |
| 2. Serving size | 1 Capsule. No division needed. Every figure in the panel is a figure for one capsule. |
| 3. Servings per container | 30. At the label’s own instruction of one capsule daily, a bottle is thirty days. |
| 4. Rows with a percentage | One: Magnesium 80 mg, 19%. Checked against the 420 mg Daily Value it is 19.05%, so the printed figure is right. The blend row carries a dagger and the words Daily Value not established, which is correct for a blend. |
| 5. Blend total and count | 575 mg and six names. Position alone would cap item n at 575 ÷ n: 575, 287.5, 191.7, 143.8, 115 and 95.8 mg. Those are the ordinary ceilings, and on this label they turn out to be wildly loose. |
| 6. A declared nutrient sourced from the blend | Yes — and this is the whole of it. 80 mg of elemental magnesium, declared as Magnesium Glycinate from proprietary blend. Magnesium bisglycinate is 14.1% magnesium by weight, so 80 mg of the element needs about 567.5 mg of the compound. Out of 575 mg, that leaves about 7.5 mg for the other five together. |
| 7. Other Ingredients and caution | Both complete. Five excipients named. The caution block names the dose limit, under-eighteens, pregnancy and nursing, medication and medical conditions. A storage line and a safety-seal warning are printed as well. This is the best label in the series on this step. |
Five of the seven steps go well for this label, and they are worth saying before the sixth. The panel is real, the serving is one capsule, the servings count is printed, the one percentage on it is arithmetically correct, and the Other Ingredients line and the caution block are both complete. That is more than most labels in this series manage.
The sixth step is where the product is. It is also the only step on this list that requires a fact from outside the bottle — the molar mass of a compound — and that fact is fixed, published and not a matter of opinion.
The step most readers never reach
A proprietary blend normally gives a reader one number and a list. The descending-order rule then produces ceilings and nothing else, because there is no second figure to anchor them to. This label supplies the second figure above the blend rather than inside it, and almost nobody looks there.
- 01Start with the one printed figureThe panel declares 80 mg of magnesium above the blend and says it comes from the magnesium glycinate from proprietary blend. That is an amount of the element, not of the compound.
- 02Check that the label’s own percentage agreesThe panel prints 19% of the Daily Value beside it. The NIH Office of Dietary Supplements gives the Daily Value for magnesium as 420 mg, and 80 ÷ 420 = 19.05%. The label’s arithmetic is correct, which confirms the 80 mg is elemental magnesium.
- 03Work out what the compound weighsMagnesium bisglycinate is Mg(C2H4NO2)2. Its molar mass is 172.42 g/mol, of which magnesium accounts for 24.305. The chelate is therefore 14.1% magnesium by weight.
- 04Divide80 ÷ 0.141 = 567.5 mg of magnesium glycinate. That is the weight of the first ingredient in the blend, and it is not a ceiling — it is forced by a printed figure.
- 05SubtractThe blend is 575 mg. 575 − 567.5 = 7.5 mg for alpha lipoic acid, butcher’s broom, L-carnitine, turmeric and coenzyme Q10 together. The first ingredient is 98.7% of the blend.
- 06Apply the descending-order rule to what is leftThe FDA requires blend ingredients “in descending order of predominance by weight”, so inside that 7.5 mg remainder item n cannot exceed 7.5 ÷ n: at most 7.5, 3.7, 2.5, 1.9 and 1.5 mg. Every one of those is a ceiling, not an amount.
The first bar is the one ingredient whose weight is fixed by a printed figure. The second is everything else in the blend added together. The five below it are the ceilings the descending-order rule puts on each one inside that remainder. A ceiling is a ceiling, not an amount.
Why this is stronger than ordinary blend arithmetic
On a normal blend the descending-order rule is all a reader has, and for a sixth-listed ingredient in 575 mg it gives a ceiling of 575 ÷ 6 = 95.8 mg. A declared element sourced from a named compound inside the blend does something different in kind: it fixes the weight of one ingredient outright, and every other ceiling is then taken against what is left rather than against the whole. Here that moves the sixth ceiling from 95.8 mg to about 1.5 mg — roughly sixty-four times tighter. The chemistry, in general and then in this case, is in the category guide.
A label is a document
The habit this whole method is trying to build is to treat a bottle as two documents printed on one piece of paper. The front is written by people who want you to buy it. The panel, the Other Ingredients line and the caution block are written to satisfy a rule, and a rule can be checked.
That distinction is not a cynical one. It is simply where the obligations fall. Nobody is required to make a front panel accurate in the way a Supplement Facts panel has to be accurate, which is why this site quotes the panel and transcribes the marketing separately. On this product the two disagree in one visible word, and the disagreement is a finding rather than an opinion: the label reads NERVE SUPPORT FORMULA and the Inside Neuralisse marketing graphic renders the same bottle as NEUROPATHY SUPPORT FORMULA.
Where they disagree, the label is the product
This is the rule the whole site runs on. A marketing graphic is artwork; a label is what is on the bottle that arrives. When the two give different words, both are printed here and the label is treated as the product. The full account of that one word is published separately.
The same principle applies to the three marks supplied with this product — a Good Manufacturing Practice seal, a non-GMO seal and a money-back seal. None of the three is printed on the bottle. A mark in a marketing folder is not a mark on a product, and a reading method that cannot tell the two apart is not a reading method.
Ten terms, in plain words
Every term below appears somewhere on this site, and nine of the ten appear somewhere on this label. They are defined here once so the guides can use them without stopping.
| Term | What it means |
|---|---|
| Supplement Facts | The ruled panel a dietary supplement carries, declaring the serving size, the servings per container and the quantity of each dietary ingredient. The FDA’s Dietary Supplement Labeling Guide sets out what belongs in it and in what order. Everything else printed on a bottle sits outside that panel and is not part of the declaration. |
| Daily Value | A reference amount a declared quantity is expressed as a percentage of. For magnesium the NIH Office of Dietary Supplements gives 420 mg for adults and children aged four and over, which is why 80 mg prints as 19%. Where no reference intake has been set, a panel prints a dagger and the words Daily Value not established — which is what the blend row on this label does. |
| Proprietary blend | A named group of dietary ingredients declared as one total weight, with the individual amounts withheld. The FDA requires the total on the same line as the blend’s name and the constituents listed underneath in descending order of weight. Operation Supplement Safety, run by the US Department of Defense, puts the consequence plainly: the amount of each individual ingredient “does not have to be listed”. |
| Descending order of predominance | The rule that the names under a blend line are printed heaviest first. It is the only reason a blend can be reasoned about at all: the item in position n cannot weigh more than the total divided by n, because n items each at least as heavy as it would otherwise exceed the total. It yields ceilings, never amounts. |
| Elemental weight and compound weight | Two different numbers for the same ingredient. 80 mg of magnesium is a weight of the metal; the magnesium glycinate that carries it weighs several times more, because most of the compound is the glycine attached to it. A panel that declares the element while naming the compound has given a reader both halves of a sum. Confusing the two is the single commonest misreading of a mineral row. |
| Chelate | A mineral bound to an organic molecule — here magnesium bound to two glycine residues, Mg(C2H4NO2)2. The practical point for a reader is arithmetic rather than biology: a chelate has a fixed percentage of the mineral by weight, which for magnesium bisglycinate is 14.1% — 24.305 of a molar mass of 172.42. That percentage is what converts a declared element into a weight of compound. |
| Standardisation | A statement that an extract has been made to contain a fixed proportion of a measured constituent. Turmeric (Curcumalonga) Rhizome Extract 95% Curcuminoids is standardised; the butcher’s broom extract on the same label is not. A standardisation is the single most informative thing a label can print about a botanical, because without it two extracts sharing a name need not share anything else. |
| Structure/function claim and disease claim | A structure/function claim describes an effect on a normal structure or function of the body — nerve support, comfort support — and must carry the FDA disclaimer. A disease claim says a product diagnoses, treats, cures or prevents a named condition, and the FDA’s own page explains that only a drug can legally make such a claim. The line, and where this product sits on either side of it, is the subject of the category guide. |
| GMP | Good Manufacturing Practice: a set of requirements covering how a facility is run, documented and cleaned. It is a process standard for a factory rather than a test of a finished bottle, and a seal is only as good as the body that issued it. On this product a GMP seal was supplied as separate artwork, names no certifying body, carries no registration number, and does not appear on the label at all. |
| Certificate of Analysis | A laboratory document reporting what a specific production lot actually contained, ingredient by ingredient. It is the only thing that settles a proprietary blend from outside the panel — Operation Supplement Safety says the only way to know what is in a product is “through laboratory testing”. None was supplied for this product, and the lot and certificate strings printed on this site are draft reference strings this desk composed so a buyer has something concrete to ask for. |
Two of those definitions do most of the work on this product. Elemental weight against compound weight is what makes the magnesium row computable. Descending order of predominance is what turns the leftover 7.5 mg into five separate ceilings instead of one shapeless remainder.
Four sums you can do unaided
Nothing on this site requires a calculator beyond what a phone has. These four are the ones that carry the whole analysis of this product, and every input is either printed on the bottle or published by a federal body.
Check the label’s own percentage
80 ÷ 420 = 19.05%. The panel prints 19%. The Daily Value of 420 mg comes from the NIH Office of Dietary Supplements. A correct percentage is worth checking because it confirms what the figure is: an amount of the element magnesium, not of the compound that carries it.
Convert the element into the compound
80 ÷ 0.141 = 567.5 mg. The 14.1% is the magnesium content of magnesium bisglycinate by weight: 24.305 of a molar mass of 172.42. This is the sum that solves the blend, and it is division by a published constant.
Subtract that from the blend total
575 − 567.5 = 7.5 mg for alpha lipoic acid, butcher’s broom, L-carnitine, turmeric and coenzyme Q10 together. The first ingredient is 98.7% of the blend. Nothing here is a ceiling yet — this is a weight forced by a printed figure.
Divide the remainder by position
7.5 ÷ 2, ÷ 3, ÷ 4, ÷ 5 gives 3.7, 2.5, 1.9 and 1.5 mg, with the second-listed ingredient capped at the whole 7.5 mg. Every one of those five figures is a ceiling, not an amount.
And one more, which is a credit rather than a criticism: 80 ÷ 350 = about 23%. The NIH Office of Dietary Supplements sets the Tolerable Upper Intake Level for supplemental magnesium at 350 mg for adults, so this capsule sits at roughly a quarter of it. That is a sensible place for a magnesium capsule to sit and this desk records it as a point in the product’s favour.
What a reading method cannot do
It is as important to be clear about what this method does not deliver, because the gap is wide and reading well does not close it.
What reading a label does tell you
- What is declared, in what quantity, per serving — and whether the declared percentages check out.
- What the ceiling is on every ingredient inside a blend, and occasionally — as here — what one of them actually weighs.
- Whether a botanical is named precisely enough to be looked up at all.
- What the manufacturer is prepared to put in writing about dose, age, pregnancy, medication and medical conditions.
- Who the responsible company says it is, and where it says it is.
What it cannot tell you
- Whether the bottle contains what the panel says. Only laboratory testing of the lot settles that, and no certificate was supplied for this product.
- Whether any of it will do anything for you. A label is a declaration of contents, not evidence of effect.
- Whether an ingredient is safe for you specifically, alongside your prescriptions and your conditions.
- What any of it costs. No price appears in any document supplied to this desk, so none is printed here.
- What caused a symptom you already have.
The last of those is the one that matters most on a product in this category. Nerve symptoms that have not been explained by a clinician are a reason to see one. Numbness and tingling have many causes, some of which need treating and some of which are time-sensitive. Reading a label carefully is a good habit; it is not a diagnosis, and this product’s own caution block says in terms to consult a physician if you take a medication or have a medical condition.
Using it in a shop
The seven-step method is written for a desk. This shorter one is written for an aisle, or for a phone in front of a product page, and it is six moves rather than seven.
- 01Photograph the panel, not the frontHold the bottle still and take one square-on photograph of the ruled box. The front of a bottle will be on the seller’s website; the panel very often will not, and on this product the front of the marketing bottle does not even match the front of the real one.
- 02Say the serving out loudOne capsule, two capsules, a scoop. Then read the next figure knowing what it is a figure for. This single habit removes most of the errors a careful reader makes.
- 03Divide the blend total by the number of namesDo it in the aisle. Six names and 575 mg means the sixth cannot exceed about 96 mg — and that is before any declared nutrient narrows it. A ceiling is a ceiling, not an amount, but a ceiling is enough to compare two bottles on the same shelf.
- 04Look for an element declared from a compoundScan the rows above the blend for a mineral with a percentage beside it and a bracket naming where it comes from. If the bracket points into the blend, the blend can be solved rather than merely bounded, and the answer is often unflattering.
- 05Read the caution block before the claimsIt is the part written for your body. If you take a prescription medicine, that paragraph is the only part of the label addressed to you, and on this product it says in terms to consult a physician first.
- 06Write down what is missingNo amount for five of six ingredients. No country of origin. No manufacturer, only a distributor. No certificate. Absence is a finding, and it stays not published rather than becoming unclear.
Nothing in that list says a bottle is the answer to anything. The claims supplied with this product are positioning rather than mechanism — no route of action is stated in any document supplied — and two of the six ingredients return no fact sheet at either federal body this desk reads. The guides are about reading, not about buying.
References
Nine sources, all opened and read. Every quotation on these three guide pages is copied from the page linked here.
- U.S. Food and Drug Administration (2026). Dietary Supplement Labeling Guide: Chapter IV. Nutrition Labeling.
- U.S. Food and Drug Administration (2026). Structure/Function Claims.
- NIH Office of Dietary Supplements (2026). Magnesium: Fact Sheet for Health Professionals.
- NIH Office of Dietary Supplements (2026). Magnesium: Fact Sheet for Health Professionals — nerve function.
- NIH Office of Dietary Supplements (2023). Carnitine: Fact Sheet for Health Professionals.
- National Center for Complementary and Integrative Health (2025). Turmeric: Usefulness and Safety.
- National Center for Complementary and Integrative Health (2019). Coenzyme Q10.
- Operation Supplement Safety, U.S. Department of Defense (2026). Proprietary blends: What does this mean?.
- U.S. Food and Drug Administration (2026). Questions and Answers on Dietary Supplements.
The product pages carry the rest of it. The panel is transcribed row by row, with the derivation and the fifteen numbered findings, and each of the six ingredients has its own entry with its ceiling and what can be cited about it.
Read the blend row before you decide
Thirty capsules, one a day. The panel declares 80 mg of magnesium at 19% of the Daily Value, and a 575 mg blend of six ingredients. The magnesium declaration fixes the weight of the first ingredient at about 567.5 mg, which leaves roughly 7.5 mg for the other five together. No price appears anywhere but the checkout.
- Guarantee as printed at checkout
- 80 mg magnesium, 19% of the Daily Value
- Returns to 4 Times Square, Floor 22, New York, NY 10036, USA
No price appears in any document supplied to this desk, as of October 11, 2026, so none is printed here. The checkout screen is the only place a price exists. Questions first? Every published contact route is here.
Keep reading
Authorship and review
Who wrote and checked this page
What this page was checked against
- The label artwork, read at 2× and transcribed character for character. Where the label and the marketing disagree, the label is printed.
- The seller pack, quoted rather than paraphrased, and identified as marketing wherever it is used.
- The published sources listed in the references on this page. Every one was opened and read; none is cited from memory.
- The arithmetic, shown in full. Every per-ingredient figure other than the magnesium is a ceiling derived from one printed number, never a measured amount.
- Nothing else. Any fact that was not supplied is recorded as not published rather than filled in.
Last updated October 11, 2026. A highlighted slot is a value no human has supplied yet. Who reviews these pages?