Magnesium Glycinate vs Magnesium Oxide
Evidence-based comparison from our database of 3,862 ingredients
TL;DR
Magnesium Glycinate is typically chosen for sleep, while Magnesium Oxide is used for regularity. Neither outranks the other. The right pick depends on the goal, and the two are not interchangeable.
Magnesium Glycinate
May improve sleep quality and reduce muscle cramps.
Commonly used for:
Magnesium Oxide
Research-backed mineral with potential health benefits.
Commonly used for:
Side-by-Side Comparison
| Factor | Magnesium Glycinate | Magnesium Oxide |
|---|---|---|
| Research depth | Extensively studied | Studied |
| Effective Dose | 200-400mg of elemental magnesium | Varies by individual. See research for details |
| Time to Effect | Noticeable effects on sleep and muscle relaxation may take a few days to a week | Effects may take days to weeks to notice |
| Commonly used for | sleep, evening wind-down | regularity, digestive comfort |
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 Magnesium Glycinate when:
- • The goal is sleep
- • The goal is evening wind-down
Reach for Magnesium Oxide when:
- • The goal is regularity
- • The goal is digestive comfort
Frequently Asked Questions
Related Pages
More Comparisons
Go deeper on either one
Every ingredient page carries the evidence, doses, forms and cautions behind this comparison, with the sources one click away.
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.