TL;DR
Glycine is typically chosen for sleep quality, while Melatonin is used for sleep onset. Neither outranks the other. The right pick depends on the goal, and the two are not interchangeable.
Glycine
The sleep amino.
Commonly used for:
Melatonin
The vampire hormone.
Commonly used for:
Side-by-Side Comparison
| Factor | Glycine | Melatonin |
|---|---|---|
| Research depth | Well studied | Extensively studied |
| Effective Dose | 3g | 0.3mg - 5mg |
| Time to Effect | Effects within minutes to hours | Effects within minutes to hours |
| Commonly used for | sleep quality, waking up rested | sleep onset, jet lag |
Which fits which goal
These two do different jobs, so the comparison ends at the goal, not at a ranking. Match the ingredient to what you are trying to change and check the dose against the amount on the label.
Reach for Glycine when:
- • The goal is sleep quality
- • The goal is waking up rested
Reach for Melatonin when:
- • The goal is sleep onset
- • The goal is jet lag
Frequently Asked Questions
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Browse the libraryThis comparison is for informational purposes only and should not replace professional medical advice. Always consult a healthcare provider before starting any supplement regimen, especially if you have existing health conditions or take medications.