Guide
How to read a supplement label before you buy it
A method rather than an opinion, with the Glucotide label as the worked example. The Supplement Facts panel is the regulated document and the front of the package is the advertisement, so read them in that order. A proprietary blend hides the weights but not the order, which is what lets you work out a maximum for each member. And the Other Ingredients line settles what no seal on the front can.
By the Goglucotide Editorial Desk · Last updated September 25, 2026
The method in four lines
Read time under a minute- Read the panel before the advert. Here the advert's own graphic is subtitled SIX VITAL NUTRIENTS and the panel prints seven.
- A proprietary blend hides the weights but not the order. The ordering rule in 21 CFR 101.36(c)(2) gives a maximum for each member.
- A printed warning is worth more than a seal, and this bottle carries one about licorice that is in none of the marketing.
- The Other Ingredients line settles what a seal cannot. This one reads Gelatin (Capsule), so the capsule is not vegetarian.
Read the panel before you read the advert
The front of a package is an advertisement. The Supplement Facts panel is a regulated document. When they disagree, the panel is the one that has to be right. The same six rows sit on every panel you will ever pick up.
| The row | What it is for | What Glucotide prints |
|---|---|---|
| Serving size | The unit every other figure is per. | 2 capsules, printed. Not one capsule. |
| Servings per container | How many of those units the bottle holds. | 30, printed. With 60 capsules and two a day, a bottle is exactly 30 days. |
| Amount per serving | A weight beside a name. The column that makes a label usable. | Filled for all seven nutrients. Empty for the 12 blend members. |
| % Daily Value | The amount against a fixed reference figure. | Printed for all seven. Six check against a Daily Value our sources give; manganese is the one we could not check. |
| The blend line | One weight covering a named group. | Proprietary Blend, 82 mg, 12 ingredients indented beneath it. |
| Other ingredients | What carries the product rather than is the product. | Printed in full, and the line that settles the vegetarian question. |
Here is that difference on this product. The seller’s ingredient graphic is subtitled SIX VITAL NUTRIENTS and shows six cards with no amount against any of them.
The panel prints seven. Manganese is the one left out, at 1 mg and 43% of the Daily Value, and the 82 mg blend of 12 more is not on the graphic at all — so the ingredients it omits include the licorice the bottle prints a warning about. That is the ordinary difference between a summary and a document, and it is why the order of reading matters.
What a proprietary blend gives up, and what it keeps
A proprietary blend is one weight standing in for several. It is legal, and it is the largest thing a label can withhold while still being complete.
21 CFR 101.36(c)(2) requires the members of a proprietary blend to be declared in descending order of predominance by weight. If the order is descending and the whole blend is 82 mg, the member in position n cannot weigh more than 82/n milligrams. Every figure of that kind is a ceiling: the most an ingredient could be, never the amount in the bottle. Licorice is first here, so its ceiling is the whole 82 mg, which rules out nothing; the bound only starts to say something further down, at 20.5 mg for position four, where alpha lipoic acid sits, and 6.9 mg at the last. The ingredients page runs the full profile.
21 CFR 101.36(c)(2), on how blend members must be listed
Dietary ingredients contained in the proprietary blend that are listed under paragraph (b)(3) of this section (i.e., 'other dietary ingredients') shall be declared in descending order of predominance by weight, in a column or linear fashion, and indented under the term 'Proprietary Blend' or other appropriately descriptive term or fanciful name.
The phrase that matters is descending order of predominance by weight.
The same regulation, on what the blend weight covers
The quantitative amount by weight specified for the proprietary blend shall be the total weight of all other dietary ingredients contained in the proprietary blend and shall be placed on the same line to the right of the term 'Proprietary Blend'
So the printed total is the sum of every member: 82 mg here, covering 12 ingredients.
A printed warning is worth more than a seal
A seal is the most prominent thing on this package and the least informative. A printed warning is the opposite: small, and the one sentence somebody decided had to be there.
Printed on this bottle
WARNING: Licorice root may elevate blood pressure at high doses. Not for use by persons with hypertension, heart disease, liver or kidney disorders, or for prolonged periods without medical supervision.
It appears in none of the marketing supplied with this stock, and it adds not for prolonged periods without medical supervision on a product sold in packs of 60, 90 and 180 days. NCCIH’s licorice root page carries the same concern: “Licorice contains a component called glycyrrhizin, or glycyrrhizic acid, that can cause serious adverse effects, such as irregular heartbeat and cardiac arrest, especially when consumed in large amounts or in the long term.” And not only at large doses: “Even small amounts of glycyrrhizin from licorice root products have been linked to severe adverse effects in people who consume a lot of salt, in people with hypertension, and in people with heart or kidney conditions.”
The question a warning leaves behind
This label prints a warning about licorice and does not print how much licorice is in the blend, or how much glycyrrhizin it carries. Both are not published, so a reader can see the manufacturer thought the risk worth printing and cannot judge its size.
Against that, here is what the eight seal marks on this site are backed by. A seal is artwork, not a certificate: no certifying body, certificate number or audit date was supplied for any of the eight. A ninth mark was supplied and is published nowhere on this site - see the note on the vegetarian seal.
The bracket after the nutrient name
A nutrient line often names a form in brackets — six of the seven here do. Most readers skip it, and it decides how much of the printed weight reaches you.
| Nutrient | The form printed here | The alternatives | What NIH says |
|---|---|---|---|
| Magnesium | Magnesium Oxide | Aspartate, citrate, lactate, chloride | NIH: the four named forms are absorbed more completely and are more bioavailable than the oxide and the sulfate. |
| Zinc | Zinc Oxide | Citrate, gluconate | NIH: absorption from citrate or gluconate is approximately 61% in young adults; from zinc oxide it is 50%. |
| Vitamin E | d-alpha tocopheryl acetate | dl- forms are synthetic | NIH: the d- prefix marks the naturally sourced form; the synthetic one is labelled dl-. This label prints the d- form. |
Two of those go against this label and one runs in its favour, which is what an honest reading usually produces. None of it is a safety point, and the percentages guide works through the arithmetic.
The Other Ingredients line, and what it settles
The last line of a panel is the one most readers never reach, and it answers what no seal on the front can.
Printed on this label
Other Ingredients: Microcrystalline Cellulose, Gelatin (Capsule), Magnesium Stearate, Silicon Dioxide.
Four items, and one decides something a buyer may care about a great deal. Gelatin is an animal product, so a gelatin capsule is not vegetarian. No seal overrides that line.
What this site did about that disagreement
A vegetarian-friendly seal was supplied with this stock. The Other Ingredients line on the label reads: Microcrystalline Cellulose, Gelatin (Capsule), Magnesium Stearate, Silicon Dioxide. Gelatin is an animal product, so a gelatin capsule is not vegetarian. We have not published that seal anywhere on this site, because where the artwork and the label disagree the label wins, and this is not a close call. If you avoid animal products, this is the line on the label to read before the seal on the advert.
The lesson travels: when a seal and the Other Ingredients line disagree, the line is the document. It is also where an allergic reader looks first, and where the fillers are declared.
The questions only an order desk can answer
Much of what a label marks as absent is unpublished rather than unknowable, and a desk that handles the product daily can settle several of these in a minute.
| The question | What is known here |
|---|---|
| How much licorice, and how much glycyrrhizin, is in a serving? | Not published. Licorice is first, so at most the whole 82 mg. The bottle prints a warning about it. |
| How much alpha lipoic acid is in a serving? | Not published. Fourth in the blend, so at most 20.5 mg. |
| Is there a certificate of analysis document, not a reference number? | None has reached this desk. What was supplied is the string GLU-8453-26-GO. |
| Which certifying body issued each seal, and when was it audited? | Not published for any of the eight marks shown here. |
Ask before you buy rather than after: the desk is the only party that can put a number on the first two. Order desk +1 (282) 450-4273; the website desk at [email protected] handles the pages and cannot see an order.
A method you can take to any label
Three bottles is $59 each with free US shipping, and there are 60 days to change your mind on every pack.
See the packs, from $49 a bottle
Order desk +1 (282) 450-4273 · opening hours not published
Questions
Glucotide: common questions
What should I read first on a supplement label?
If a blend gives no amounts, is it completely opaque?
How do I tell whether a capsule is vegetarian?
References
- National Institutes of Health, Office of Dietary Supplements. Magnesium: Fact Sheet for Health Professionals. https://ods.od.nih.gov/factsheets/Magnesium-HealthProfessional/
- National Institutes of Health, Office of Dietary Supplements. Zinc: Fact Sheet for Health Professionals. https://ods.od.nih.gov/factsheets/Zinc-HealthProfessional/
- National Institutes of Health, Office of Dietary Supplements. Vitamin E: Fact Sheet for Health Professionals. https://ods.od.nih.gov/factsheets/VitaminE-HealthProfessional/
- National Center for Complementary and Integrative Health. Licorice Root. https://www.nccih.nih.gov/health/licorice-root
- National Institutes of Health, Office of Dietary Supplements. Vitamin C: Fact Sheet for Health Professionals. https://ods.od.nih.gov/factsheets/VitaminC-HealthProfessional/
- Electronic Code of Federal Regulations. 21 CFR 101.36 - Nutrition labeling of dietary supplements. https://www.ecfr.gov/current/title-21/chapter-I/subchapter-B/part-101/subpart-F/section-101.36
Every source above was opened and read on September 24, 2026. None of them tested Glucotide itself. They describe single nutrients, one herb and one labelling regulation, which is a different thing from testing this finished formula.