A clear label makes a supplement easier to compare. Start with serving size, ingredient amounts, directions and the evidence behind the claims.
A supplement bottle can make a strong first impression. The more useful question comes next: can you tell what you are buying, how much a serving provides, and whether it fits the plan you have discussed with your healthcare professional?
To read a supplement label, start with the serving size, then check each ingredient and its amount. Review directions, warnings and other ingredients before comparing claims or price. In the United States, the Supplement Facts panel is the place to begin. [1]
You do not need to become a labeling expert. A few questions can make your next purchase more deliberate.
1. Start with serving size, not bottle size
An amount printed in the Supplement Facts panel generally refers to a serving, which may contain more than one capsule. Read the directions alongside the panel. [1]
Here is a shopping example: a bottle with 90 capsules and a three-capsule daily serving lasts 30 days when used that way. A 60-capsule bottle taken at one capsule daily lasts 60 days. Capsule count alone does not tell you how long the bottle will last.
Before you compare prices, write down the recommended serving and the number of servings you expect to use. Do not increase the serving simply to match another product's advertised amount.
2. Match the ingredient name with its amount
The ingredient and the quantity belong together. A familiar ingredient name cannot tell you whether a product resembles a formula studied in research.
For minerals, distinguish the amount of the mineral from the weight of the compound supplying it. NIH explains that a magnesium Supplement Facts panel declares elemental magnesium, rather than the weight of the entire magnesium compound. [2]
For example, the current U.S. Ecosh Magnesium Complex panel lists 336 mg magnesium per four-capsule serving, supplied by malate, bisglycinate, citrate and taurate. The same panel also lists vitamin B6, manganese and shilajit extract. Those additional ingredients matter when deciding whether the whole formula suits you. [3]
Use this as a label-reading example, not a dose recommendation. The product's directions and warnings still apply, including its instruction not to use during pregnancy or nursing. [3]
3. Understand what Daily Value tells you
Percent Daily Value, or %DV, puts the declared quantity in relation to an established labeling reference. It is not a personalized prescription. Some dietary ingredients have no established Daily Value; the label identifies that separately. [1]
A higher percentage is not automatically a better purchase. Compare your sources of the same nutrient, including other supplements you already use, rather than evaluating each bottle in isolation. NIH notes that taking more than you need can increase the risk of side effects. [4]
4. Read blends carefully
A proprietary blend may declare a combined weight without revealing each ingredient's individual amount. FDA labeling guidance describes how these blends are listed. [1]
That creates a practical limit for comparison: if you cannot see the individual quantity, you cannot confidently match that ingredient's dose to a study. Ask the manufacturer for clarification before relying on a dose-specific claim.
This does not make every blend a poor choice. It tells you which information is available and which questions remain unanswered.
5. Ask what “tested” means
When comparing third party tested supplements, look beyond the phrase itself. Ask what was tested, who performed the work, and whether the information relates to the finished product or only a raw ingredient.
Independent quality testing can address matters such as identity, label contents and contaminants. A quality seal does not, by itself, establish that a supplement is effective or suitable for a particular person. [4]
A useful request to a brand is: “Can you explain the tests performed on this product and provide the relevant results for my batch?” If a certificate of analysis is available, check the product or material name, batch identifier, date and listed tests. Treat those details as questions to discuss with the supplier, not as a clinical trial.
6. Separate quality information from health promises
Manufacturing information and health-outcome evidence answer different questions. A carefully manufactured product still needs appropriate evidence for the benefits advertised.
FDA does not approve dietary supplements for safety and effectiveness before marketing in the way it approves drugs. Be cautious about language suggesting that a supplement is an approved treatment. [5]
FTC guidance also considers both stated and implied claims. A research link or disclaimer does not make an unsupported promise reliable. The study needs to be relevant to the claim and product being presented. [6]
For shoppers, that means asking a simple follow-up: “What evidence supports this exact promise?”
7. Compare the complete purchase
Make a short comparison before adding a supplement to your cart:
| What to compare | Question to answer |
|---|---|
| Serving | How much do the directions say to take? |
| Composition | Which ingredients and amounts are actually listed? |
| Suitability | Have I checked the warnings and my other products? |
| Evidence | Does the research support the specific advertised outcome? |
| Testing | What testing information can the company provide? |
| Practical cost | What is the cost per labeled daily serving? |
The clearest choice is one you can explain in those terms. A long ingredient list, a premium price or a dramatic promise should not have to make the decision for you.
Put the label first with Ecosh
If you are comparing Ecosh products, open the Supplement Facts and How to Use sections before choosing. You can start with the Magnesium Complex ingredient panel to practice the steps above, or browse the Ecosh collection and compare the products relevant to your needs.
Keep the current label close when discussing a product with your healthcare professional. A clear question about the whole formula is more useful than choosing from the front of the bottle alone.
General educational information. Follow the current product directions and obtain individual advice when needed.
References
- FDA. Dietary Supplement Labeling Guide, Chapter IV: Nutrition Labeling.
- NIH Office of Dietary Supplements. Magnesium: Health Professional Fact Sheet.
- Ecosh US. Magnesium Complex. Label information checked 25 September 2026; composition source, not independent proof of efficacy.
- NIH Office of Dietary Supplements. Dietary Supplements: What You Need to Know.
- FDA. Information for Consumers on Using Dietary Supplements.
- FTC. Health Products Compliance Guidance.
Editorial review: September 28, 2026.
