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Magnesium Citrate

Research Reliability -

A well-absorbed magnesium citrate supplement that supports relaxation, digestion, and healthy muscle function.

Appetite

Mood

Sleep

Magnesium Citrate

Description

Magnesium citrate combines magnesium with citric acid, resulting in a highly soluble and well-tolerated form with good bioavailability. It is particularly effective for supporting bowel regularity, making it a go-to for those experiencing constipation or sluggish digestion alongside magnesium deficiency. Like all forms of magnesium, it supports muscle relaxation, nerve transmission, and cardiovascular rhythm. This formulation is a versatile daily supplement for anyone looking to replenish this critically important mineral.

Effects

First days

may loosen stools if bowel-sensitive

Week 1–2

muscle relaxation and regularity may improve for some

Ongoing

general magnesium repletion

How It Feels

You may feel this in your digestion first; citrate draws water into the bowel and can act mildly laxative, which some people want and others do not. Muscle relaxation and calmer sleep build over a week or two.

Evidence

Evidence Strength

Moderate (some human RCTs)

Caveats

Citrate form is well-absorbed but also more likely to have a laxative effect at higher doses; core efficacy evidence mirrors magnesium generally.

Usage

Commonly Referenced Starting Amount

100–200 mg elemental magnesium/day

Commonly Referenced Amount

200–400 mg elemental magnesium/day, though citrate is more laxative than glycinate at the same dose

Referenced Upper Limit

350 mg/day from supplements is the IOM upper limit, again a GI-tolerance ceiling rather than a toxicity one

Onset

1–2 weeks

Biomarkers to Track

Subjective

(Daily)

Sleep onset latency (mins)
Muscle cramps or tension
Bowel regularity score

Objective

(Quarterly)

RBC magnesium level
Fasting glucose
Blood pressure (resting)

Risks

Very safe. The citrate portion draws water into the bowel, so it can act mildly laxative.

Who Should Skip

Those with kidney disease, and anyone prone to loose stools.

Common Mistakes

Dosing too high and triggering the runs, and taking it away from a meal.

Disclaimer

This information is for educational purposes only and is not medical advice. It is not intended to diagnose, treat, cure, or prevent any disease. Consult a qualified healthcare provider before starting any new supplement, especially if you are pregnant, nursing, taking medication, or managing a health condition.