SupplementDuel

Magnesium Glycinate

Sleep

The best-tolerated, best-absorbed magnesium form for sleep and stress. Doesn't cause loose stools like citrate.

sleepstressmuscle-relaxationnon-laxative
Typical dose
200–400 mg elemental Mg
Evidence
Moderate (some RCTs)
Onset time
Acute: 1–3 hours
Half-life
~28 hours (Mg)
Forms
Capsule, Powder, Tablet
Source
synthetic
Best taken with
evening, with water
Best time of day
evening
Bioavailability
5/5
Safety rating
5/5
Price per serving
$0.25
Vegan / GF / 3rd-party
✓ / ✓ / ✓
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Vetted brands, third-party testing, ships worldwide.

Common uses

  • • Sleep quality
  • • Anxiety
  • • Muscle cramps
  • • RLS

Effect profile

Strength
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Muscle
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Energy
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Focus
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Immunity
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Common side effects

  • • Mild laxative effect (rare)
  • • Drowsiness

Avoid if

  • • Severe kidney disease

Drug interactions

  • • Bisphosphonates
  • • Antibiotics (timing)

Related sleep supplements

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Medical disclaimer

SupplementDuel is for educational purposes only and is not medical advice. Consult a physician before starting, stopping, or combining supplements.