How Long Does Melatonin Last?
Quick Answer
Melatonin lasts 2-3 years when unopened. Once opened, it should be used within 6-12 months.
Shelf Life by Storage Condition
| Storage Condition | Duration |
|---|---|
| Pantry (Unopened) | 2-3 years |
| Pantry (Opened) | 6-12 months |
| Refrigerator (Unopened) | 2-3 years |
| Refrigerator (Opened) | 6-12 months |
| Freezer | Not applicable |
How to Tell If It Has Gone Bad
- Change in color or appearance of tablets or capsules
- Unusual or foul odor
- Crumbly or powdery texture instead of solid form
- Loss of effectiveness or potency
Proper Storage Tips
- Store in a cool, dry place away from direct sunlight
- Keep container tightly closed when not in use
- Avoid exposure to excessive heat or moisture
Risks of Using Expired Melatonin
Using expired melatonin may result in reduced effectiveness, leading to inadequate sleep support. While it is unlikely to cause severe harm, degraded products could potentially cause mild gastrointestinal discomfort or allergic reactions in sensitive individuals.
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Frequently Asked Questions
How long does Melatonin last?
Melatonin typically lasts 2-3 years unopened and about 6-12 months after opening when stored properly.
Does Melatonin expire?
Yes, melatonin supplements have an expiration date after which their potency and effectiveness may decrease.
How can you tell if Melatonin has gone bad?
Signs include changes in color or texture, unusual odor, and reduced effectiveness.