Quick answer
Start with the serve size, then check the amount of each ingredient per serve (not per capsule), the form of each ingredient, the directions for use, the warnings and the number of serves per pack. Divide the price by the serves to compare value.
1mg
= 1000mcg
Per serve
May be more than one capsule
AUST L
A TGA listing number on some products
Value
Price ÷ serves per pack
Step-by-step: reading the label
- Serve size: how many capsules, gummies, drops or scoops make one serve.
- Amount per serve: the milligrams (mg) or micrograms (mcg) of each active ingredient.
- Form: for example, "magnesium (as glycinate)" or "iron (as bisglycinate)".
- Directions: how much to take and when.
- Warnings: who should check with a doctor first.
- Serves per pack: how long the product will last.
Units you'll see
| Unit | Meaning | Example |
|---|---|---|
| mg | Milligram (1/1000 of a gram) | NAC 1000mg |
| mcg or µg | Microgram (1/1000 of a milligram) | Iodine 150mcg |
| CFU | Colony forming units (probiotics) | 12 billion CFU |
| AFU | Active fluorescent units | Akkermansia 1 billion AFU |
| FCC | Enzyme activity units | Lactase 9000 FCC |
| 15:1 | Extract ratio | Pomegranate 15:1 |
What is an AUST L number?
In Australia, many complementary medicines are listed on the Australian Register of Therapeutic Goods (ARTG) and display an AUST L number. Products sold as foods or dietary supplements may follow different rules. If you have questions about a specific product, contact the seller.
Comparing value fairly
Tip: Price per serve = price ÷ serves per pack. Then compare the amount of the key ingredient per serve.
Our guides explain the trickier labels: CFU and AFU, extract ratios and chelated minerals.
Frequently asked questions
Is 'per capsule' the same as 'per serve'?
Only if a serve is one capsule. Many products use two or more capsules per serve.
What's the difference between mg and mcg?
1 milligram (mg) equals 1000 micrograms (mcg).
What does 'equivalent to' mean on a herbal label?
It's the amount of raw herb the extract was made from, which is larger than the actual extract weight.
Keep reading
This article is general information only and is not medical advice. Always read the label and follow the directions for use. Dietary supplements should not replace a balanced diet. If you are pregnant, breastfeeding, taking medication or have a medical condition, speak with your doctor or pharmacist before taking a new supplement.
