How to Read a Supplement Label: 10 Things Most People Miss (Australian Guide 2026)
Reading a label is a skill, and nobody teaches it
Supplement labels follow conventions that are perfectly logical once you know them and genuinely misleading until you do. This guide covers the ten things that trip people up most often, in the order you encounter them on a pack.
It applies to any supplement — capsules, gummies, drops, powders.
1. The front of the pack is marketing. The panel is the declaration.
Start here, because everything else follows from it.
The supplement facts panel on the back is a regulated declaration of what is in the product. The front is designed to sell it. When the two disagree — and they do, more often than you would expect — the panel is the one to trust.
If a front label names an ingredient that does not appear in the panel, that ingredient is not meaningfully in the product.
2. Serving size changes everything
The single most common misreading.
"1000mg per serving" means one thing if a serving is one capsule and something quite different if it is three. A 90-capsule bottle at three per serving is a 30-day supply, not 90.
Always find "Serving size" and "Servings per container" first. Then compare products on cost per serving, never cost per bottle.
3. Extract ratios: what 10:1 actually means
A 10:1 extract means ten parts of raw herb were concentrated into one part of extract. So 100mg of a 10:1 extract corresponds to 1000mg of raw herb.
Labels often print the larger, raw-herb-equivalent figure because it looks more impressive. Both numbers are honest; they describe different things.
The practical rule: you cannot compare a 500mg dried herb against a 500mg 10:1 extract. The second is roughly ten times more concentrated. Look for the ratio.
4. Standardisation is more useful than milligrams
"Standardised to 95% curcuminoids" or "standardised to 85% fatty acids" tells you how much of the active fraction is actually present.
A standardised extract gives you a consistent amount batch to batch. An unstandardised powder varies with the harvest.
Where a product is standardised, the label will say so prominently — it costs more to produce and manufacturers want credit for it. Silence generally means unstandardised.
5. mcg and mg are a thousand apart
1mg = 1000mcg. This causes real confusion, particularly with:
- Biotin — usually in thousands of mcg
- Vitamin D — often in both mcg and IU; 25mcg = 1000 IU
- Minerals — selenium, chromium and iodine are mcg; magnesium and calcium are mg
If a number looks strangely small or strangely large for its ingredient, check the unit before anything else. An ingredient listed at 80mcg where 80mg would be expected is, in practice, barely present.
6. Elemental versus compound weight
Minerals are bound to a partner molecule — magnesium glycinate, zinc picolinate, iron bisglycinate.
"700mg magnesium complex" means 700mg of the whole compound. The elemental magnesium — the magnesium itself — is considerably less, often a fifth to a tenth of the compound weight depending on the form.
Good labels state elemental content separately. Where they do not, the larger figure is the compound.
7. Proprietary blends hide the amounts
A "Proprietary Blend 500mg" followed by a list of eight ingredients tells you the total, not the split. The blend could be 490mg of the cheapest ingredient and 10mg spread across the rest.
Blends are legal and common. They are simply less informative. Products that disclose each ingredient individually are giving you more to work with.
8. The "other ingredients" line is where the real answers are
Most people skip it. It is where you find:
- Capsule shell — gelatin (animal) or hypromellose/HPMC (plant). This is how you know whether a product is vegan, regardless of what the front says
- Allergens — soy, fish, tree nuts, milk, wheat
- Sweeteners — cane sugar, glucose syrup, stevia, erythritol
- Fillers and flow agents — magnesium stearate, silicon dioxide, rice flour
A "soy free" claim on a front panel means nothing if the other ingredients list includes soybean oil or soy lecithin. It happens.
9. Australian allergen declarations
Under FSANZ Standard 1.2.3, certain allergens must be declared on products sold in Australia. The ones that come up most in supplements:
- Fish — any fish oil product
- Tree nuts — including black walnut, which is a tree nut even though it is sold as a botanical
- Soy — soybean oil in softgels, soy lecithin, and nattokinase, which is derived from fermented soybeans
- Crustacean — glucosamine from shellfish
Imported products sometimes carry US-format labelling without the Australian declaration. The absence of a warning does not mean the absence of the allergen — read the ingredient list itself.
10. The FDA disclaimer means nothing here
"These statements have not been evaluated by the Food and Drug Administration" is a United States requirement. It has no standing in Australia.
Seeing it tells you the product was labelled for the US market, which is worth knowing for a different reason: that pack may also be missing an Australian sponsor address, Australian allergen declarations, and Australian warning statements.
The thirty-second version
If you only do three things:
- Find the serving size and work out cost per serving
- Read the supplement facts panel, not the front
- Read the other ingredients line — shell, allergens, sweeteners
That covers most of what goes wrong.
Always read the label and follow the directions for use. This article is general information about supplement labelling, not health advice. Supplements should not replace a varied, balanced diet. If symptoms persist, talk to your health professional.