Quick answer
Store supplements in a cool, dry place away from direct sunlight, below the temperature on the label (often 25°C or 30°C). Avoid bathrooms, kitchens near the stove and hot cars. Keep lids tightly closed, leave the silica sachet in, and refrigerate only if the label says so.
Best place
A cool, dry cupboard
Avoid
Bathrooms, stovetops, hot cars
Silica sachet
Absorbs moisture: leave it in
Fridge?
Only if the label says so
The golden rules
- Cool: follow the "store below" temperature on the label.
- Dry: humidity can make powders clump and capsules soften.
- Dark: keep out of direct sunlight.
- Sealed: close the lid tightly after every use.
- Out of reach: keep away from children and pets.
Where not to keep supplements
| Place | Why to avoid |
|---|---|
| Bathroom cabinet | Steam and humidity |
| Above the stove or kettle | Heat and steam |
| Car glovebox | Can exceed 60°C in an Australian summer |
| Sunny windowsill | Heat and light |
Tip: Travelling in summer? Carry supplements in your bag rather than leaving them in the car.
Format-specific tips
- Gummies can soften or stick together in heat: keep them cool.
- Powders clump with moisture: always use a dry scoop.
- Softgels can stick together in heat: store below the label temperature.
- Liquid drops: shake before use and follow any "after opening" instructions.
- Probiotics: some are shelf-stable, others need refrigeration. Check the label.
Frequently asked questions
Should I keep supplements in the fridge?
Only if the label says so. The fridge can add moisture each time you open the bottle.
What is the little sachet in my bottle?
It's usually a silica gel or desiccant sachet that absorbs moisture. Leave it in, and don't eat it.
Can I use supplements after the expiry date?
No. Follow the best-before or expiry date on the label.
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.
