[Ingredient library]

Magnesium
glycinate

Magnesium supports normal muscle and nerve function.* PSN Electrolytes has 150 mg of magnesium per serving, as magnesium glycinate, a form that’s gentle on the stomach in a drink you take around training.

Reviewed by Dr. Leandro Cordova, PhD, Formulation Scientist · Last reviewed October 28, 2026

At a glance

In PSN Electrolytes
150 mg per serving
Form
Magnesium glycinate
% Daily Value
36% (of 420 mg)
Upper limit (supplements)
350 mg a day
Found in
Electrolytes · Stack · Power Stack
[Why this form]

Why we use magnesium glycinate

A form chosen for a drink you take around training.

  1. Magnesium glycinate

    What PSN uses

    Gentle on the stomach.

  2. Magnesium oxide

    Cheap, but much less of it is absorbed and it often causes loose stools.

[Why this dose]

Why 150 mg per serving

Enough to top up your diet, well under the upper limit.

  1. 150 mg

    Per PSN serving

    Tops up what many people don’t get from food.

  2. 36%

    Of the daily value

    The daily value for magnesium is 420 mg.

  3. 350 mg

    Upper limit from supplements

    A day’s magnesium from supplements should stay under this.

[Good to know]

What to know

  1. Gentle form, clearly stated dose

    The label lists the elemental magnesium amount, 150 mg, not just the weight of the compound.

  2. Supports normal muscle and nerve function*

    That’s the role magnesium plays in the body.

  3. No cramp, sleep or anxiety claims

    A Cochrane review doesn’t support magnesium for cramps, and evidence for sleep or anxiety is weak, so we don’t claim them.

[Safety]

Who should check first

A few things to know before you use it.

  1. No more than 2 servings a day

    Count magnesium from other supplements too: 3 servings (450 mg) would go over the 350 mg upper limit. Too much can cause loose stools.

  2. Kidney disease

    Check with your healthcare provider first.

  3. Antibiotics and osteoporosis medications

    Magnesium can interfere with some of them, so space them a few hours apart and ask your pharmacist.

[FAQ]

Quick answers about magnesium

How much magnesium is in PSN Electrolytes?

150 mg per serving, about 36% of the daily value.

What is the upper limit for magnesium?

350 mg a day from supplements (magnesium from food doesn’t count toward it). Don’t take more than 2 servings of PSN Electrolytes a day, and count other supplements.

Why glycinate instead of magnesium oxide?

Glycinate is gentle on the stomach. Oxide is cheaper, but much less is absorbed and it often causes loose stools.

Does magnesium prevent cramps?

The research doesn’t support it: a Cochrane review found no clear benefit for typical muscle cramps, so we don’t make that claim.

[Research]

Research we relied on

Where you'll find it at PSN: PSN Electrolytes, the Performance & Hydration Stack and the Power Stack (coming soon).

Visual guide: The Journey of Hydration (with a free PDF).

  1. NIH Office of Dietary Supplements

    Magnesium: fact sheet for health professionals (daily values, upper limit, interactions). ods.od.nih.gov

  2. Lindberg et al., 1990

    Magnesium bioavailability from magnesium citrate and magnesium oxide. J Am Coll Nutr 9(1):48–55. doi:10.1080/07315724.1990.10720349

  3. Garrison et al., 2020

    Magnesium for skeletal muscle cramps. Cochrane Database Syst Rev. doi:10.1002/14651858.CD009402.pub3

*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.