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Open Community Question @PacificSleeper82 • 30–44F • Magnesium Glycinate 240 mg • Week 14

▲ 108 Helpful • 3 Peer Replies

Taking Magnesium Glycinate for 3 AM wakeups: did checking the 'elemental mg' on the back label (or switching timing) finally keep you asleep?

I used to fall asleep fine at 10:30 PM, then snap wide awake at 3:00 AM with my mind racing. For months I took 1 capsule of a popular Amazon bottle that screamed '1,000 mg Magnesium Glycinate' on the front—and wondered why it did nothing. When I finally read the Supplement Facts box on the back, the serving size was 3 capsules and 1,000 mg of compound weight only yielded 140 mg of actual elemental magnesium (14% by weight), so my single capsule was barely 46 mg! Once I switched to taking 240 mg of true elemental magnesium glycinate 60 minutes before bed (plus dimming overhead lights at 9 PM), my 3 AM wakeups dropped from 5 nights a week to maybe once every two weeks. Curious for everyone here: what elemental dose and timing works best for your sleep—and did anyone here experience the paradoxical 'glycine alertness' where taking it at dinner worked better than bedtime?

⚕ Pinned FDA / NIH / PubMed Clinical Context • Karim El-Sayed — Literature & Label Auditor

Pure unbuffered Magnesium Bisglycinate Chelate (CAS 14783-68-7) is 14.1% elemental magnesium by molecular weight—meaning 1,420 mg of chelate yields 200 mg of elemental magnesium. In ~5%–10% of individuals, high bedtime glycine can act as an NMDA co-agonist; shifting dosing to dinner or trying Magnesium Taurate resolves paradoxical alertness.

Connected Clinical Guides: Condition: Insomnia Condition: Generalized Anxiety Disorder Condition: Migraine Rx: Zolpidem Rx: Trazodone Rx: Sertraline Supplement: Magnesium Glycinate Supplement: Magnesium Glycinate Chelated Complexes Supplement: L-Theanine

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Verified Peer Replies (3)

@NightShiftNurse_MN • 30–44F • Magnesium Taurate 200 mg • Week 18

I am in that 10% where taking Magnesium Glycinate right at bedtime gave me vivid dreams and a 2:30 AM wide-awake jolt! Moving 100 mg glycinate to lunch and taking 200 mg Magnesium Taurate + 200 mg L-Theanine before bed gave me deep, unbroken sleep.

@FingerLakesHiker_NY • 45–59F • Magnesium Glycinate 300 mg • Week 26

The front-of-bottle label trick got me too. Also watch out for 'buffered' blends that hide cheap Magnesium Oxide inside to inflate the elemental number—if Oxide is listed in the ingredients, it pulls water into the colon instead of absorbing cleanly.

@CalmNerves_IL • 30–44M • Magnesium Glycinate 200 mg + L-Theanine • Week 12

200 mg elemental Magnesium Glycinate + 200 mg L-Theanine 45 minutes before bed lowered my overnight resting heart rate on my watch by 4 bpm and stopped my jaw clenching.