Magnesium Glycinate vs. Citrate: Which Is Right For You?
Both are common forms of magnesium, but they work very differently. Here's how to pick the right one for sleep, stress, or digestion.
Most people don't realise there are more than ten forms of magnesium on the market — and they're not interchangeable. The two you'll see most often, magnesium glycinate and magnesium citrate, target very different needs.
What is magnesium glycinate?
Magnesium glycinate is magnesium bound to glycine, a calming amino acid. The glycine itself promotes calm and sleep onset, which is why glycinate is the preferred form for:
- Better sleep and faster sleep onset
- Stress relief and anxiety reduction
- Muscle relaxation and recovery
- Long-term magnesium repletion without GI side effects
It's gentle on the stomach and ideal for evening use.
What is magnesium citrate?
Magnesium citrate is magnesium bound to citric acid. It's well-absorbed but has a mild laxative effect, which makes it the form preferred for:
- Occasional constipation or slow digestion
- Quick magnesium top-ups
- Pre-workout use for muscle function
Side-by-side comparison
| Feature | Glycinate | Citrate |
|---|---|---|
| Absorption | High | High |
| Laxative effect | None | Mild–moderate |
| Best for | Sleep, stress, anxiety | Constipation, performance |
| Time of day | Evening | Anytime |
| Typical dose | 300–400 mg | 200–400 mg |
How to know if you need magnesium
Common signs of low magnesium include:
- Trouble falling asleep
- Muscle cramps or eye twitches
- Chronic stress or anxiety
- Constipation
- Persistent fatigue
More than half of adults don't meet the magnesium RDA from food alone, making this one of the most common nutrient gaps to fix.
Bottom line
For sleep, stress, or general use: glycinate. For occasional digestive support or pre-workout: citrate. Many people take both — glycinate at night and citrate in the morning.
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