Supplement Comparison

Magnesium Glycinate vs Citrate: Which Form Should You Take?

Take glycinate for daily magnesium, sleep and calm. Choose citrate if you also want help with constipation; its laxative effect is the tradeoff. Both are well absorbed.

The verdict on Magnesium overall

Strong consensus for

Magnesium supplements are worth taking.

8 sources: 6 positive, 2 partly

8 sources: 6 positive, 2 partly

Based on what researchers say in publicly available videos, not medical advice. Always consult your healthcare provider before starting, stopping, or changing any supplement.

What the evidence says about the form

Each claim gets one verdict, worked out from every counted mention. One dot is one source: a researcher or a study. Tap a dot to see its receipt.

positive partly neutral negative Each researcher and each study counts once per claim, however often they come up.

  1. Not enough evidence

    Magnesium glycinate and malate are better absorbed than other forms of magnesium.

    2 sources: 1 positive, 1 partly. Fewer than 3 sources so far.

    Researchers say

    1 positive, 1 partly

    Studies show

    No study counted yet.

    6 more not counted · see why
    We could not confirm who is speaking. 2
    We could not tell where the evidence comes from. 2
    The study cited could not be identified. 1
    A host's remark inside an interview. 1
    Show the receipts from 2 sources
    1. Rhonda Patrick, on The Dr. Hyman Show, at 1:16:02 Video · positive · Opinion

      “magnesium malate magnesium um glycinate and citrate if you're constipated right so so those so those are the organic salts which are more bioavailable”

    2. Mark Hyman Video · partly · 2 mentions

      on The Dr. Hyman Show, at 08:57 · partly · Opinion

      “but it's not absorbed well so you want to get chelated magnesium you want to get magnesium glycinate or citrate”

      on The Dr. Hyman Show, at 09:06 · partly · Opinion

      “it's not absorbed well so you want to get chelated magnesium you want to get magnesium glycinate or citrate”

  2. Not enough evidence

    Magnesium citrate has a laxative effect that magnesium glycinate does not.

    1 source: 1 positive. Fewer than 3 sources so far.

    Researchers say

    1 positive

    Studies show

    No study counted yet.

    7 more not counted · see why
    We could not confirm who is speaking. 6
    The study cited could not be identified. 1
    Show the receipts from 1 source
    1. Mark Hyman, on The Dr. Hyman Show, at 22:12 Video · positive · Opinion

      “magnesium citrate you can use if you have constipation so that actually helps you go to the bathroom”

  3. Leaning for

    Magnesium glycinate or malate is the best form for daily magnesium needs.

    3 sources: 3 partly.

    Researchers say

    3 partly

    Studies show

    No study counted yet.

    7 more not counted · see why
    We could not tell what position it takes on this claim. 3
    We could not confirm who is speaking. 2
    The study cited could not be identified. 1
    A host's remark inside an interview. 1
    Show the receipts from 3 sources
    1. Dr Michael Breus, on Rangan Chatterjee's channel, at 1:28:48 Video · partly · Opinion

      “So, I start most people on magnesium glycinate um with about 150 to 200 milligrams.”

    2. Mark Hyman Video · partly · 3 mentions

      on The Dr. Hyman Show, at 08:59 · partly · Opinion

      “you want to get chelated magnesium you want to get magnesium glycinate or citrate if you tend to be more”

      on The Dr. Hyman Show, at 27:47 · partly · Opinion

      “magnesium glycinate or magnesium 38 which is some the form that crosses the bloodb brain barrier helps reduce anxiety”

      on The Dr. Hyman Show, at 09:30 · partly · Opinion

      “if you take too much magnesium citrate you'll get diarrhea so you want to use magnesium glycinate”

    3. Dr. Rhonda Patrick Video · partly · 2 mentions

      on Huberman Lab, at 21:11 · partly · Opinion

      “I would say malite would be the best. That has to do with the short chain fatty acids being good for the gut.”

      on FoundMyFitness, at 23:09 · neutral · Opinion

      “taking a supplement magnesium glycinate citrate malate are”

  4. Not enough evidence

    Magnesium glycinate is a better form for sleep than magnesium threonate.

    No counted mention yet.

    Researchers say

    No researcher counted yet.

    Studies show

    No study counted yet.

    3 more not counted · see why
    We could not tell what position it takes on this claim. 2
    A host's remark inside an interview. 1

Where the sources disagree

Built from every credited researcher and cited study on each claim.

Strong consensus for

Magnesium supplements are worth taking.

Supports it 6 sources
Partly 2 sources
Not enough evidence

Magnesium glycinate and malate are better absorbed than other forms of magnesium.

Supports it 1 source
Partly 1 source

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Key Differences

Best For

Magnesium Glycinate

Daily magnesium needs, sleep, calm/anxiety, muscle relaxation

Magnesium Citrate

Occasional constipation relief — draws water into the bowel

GI / Bowel Effect

Magnesium Glycinate

Generally the gentle daily form; chelated to glycine, a calming amino acid

Magnesium Citrate

Pronounced laxative effect; the classic constipation form

Absorption

Magnesium Glycinate

Well absorbed

Magnesium Citrate

Well-absorbed and cheap — but bowel tolerance often caps the usable dose

Elemental Magnesium

Magnesium Glycinate

Good elemental content for meeting a 300-500mg daily target

Magnesium Citrate

Adequate, but GI tolerance usually limits how much you take

Cost

Magnesium Glycinate

Affordable, widely available

Magnesium Citrate

Among the cheapest forms — very widely available

What the sources say

Magnesium Glycinate

Named for daily use and sleep

Magnesium Citrate

Listed as well absorbed, and named for people who tend to be constipated

Bottom Line

For daily magnesium, and especially for sleep and calm, glycinate is the usual pick. It's chelated to glycine, a calming amino acid, and is generally well tolerated. Citrate is well absorbed and one of the cheapest forms, but its defining feature is a laxative effect; it's the classic ingredient in constipation remedies. That pull can mean loose stools, which caps how much you can take. Carbonate is a third option the sources split on. The practical move: use glycinate for your daily 300-500mg and for sleep, and keep citrate for times you want gentle constipation relief.

Protocol notes — Magnesium

Dosage
300-500mg of elemental magnesium daily (Peter Attia: 300-500mg; Rhonda Patrick: ~400mg; Mark Hyman: 400mg+).
Form
Glycinate or malate for everyday absorption (Rhonda Patrick). Carbonate for full absorption without gut effects (Peter Attia). Threonate for the brain only; don't count it toward daily needs. Citrate or oxide if you want a looser bowel.
Timing
Smaller doses spread across the day absorb better. Carbonate in the morning (Peter Attia). An evening dose for sleep.
Notes
Standard blood tests for magnesium are unreliable: the body holds plasma levels steady by drawing from bone, which hides a deficiency (Peter Attia; Rhonda Patrick). Too much supplemental zinc can block magnesium absorption. Physically active adults need 10-20% more than the sedentary RDA.

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