What is Magnesium Bisglycinate?

Magnesium Bisglycinate is magnesium chelated to the amino acid glycine. This form is commonly used for good absorption and generally gentler gastrointestinal tolerance.

What are the main benefits of Magnesium Bisglycinate?

It is often used to support sleep quality, relaxation, and normal muscle and nerve function. It can also help address low magnesium intake or deficiency.

How much Magnesium Bisglycinate should I take?

Common supplemental amounts are about 200–400 mg of elemental magnesium per day, depending on individual needs and product labeling. Splitting the dose or taking it in the evening may improve tolerance for some people.

Does Magnesium Bisglycinate cause diarrhea or stomach upset?

It is typically less likely to cause diarrhea than some other magnesium forms, but gastrointestinal upset can still occur. Starting with a lower dose and increasing gradually may help.

Who should be cautious with Magnesium Bisglycinate?

People with kidney disease should use magnesium supplements only with medical guidance due to reduced magnesium clearance. It can also interact with some medications, so separate dosing or clinician advice may be needed.

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Magnesium
Bisglycinate

Moderate study situation·7/10

A higher score indicates better study conditions, but not necessarily effectiveness.

A chelated, highly bioavailable form of magnesium used for sleep, relaxation, and muscle support, with reduced gastrointestinal side effects.

Sleep Improvement Muscle Repair Stress Relief Essential Nutrient Anxiety Relief

dose range

200–400 mg

Divided into 1–2 doses; can be taken with meals.

Consumption

Swallow capsules/tablets with water, preferably with food to reduce GI upset. Evening dosing may support sleep.

Not fat-soluble.

Best time

A portion of the dose may be taken close to bedtime to enhance relaxation or sleep.

Description

Magnesium Bisglycinate is a chelated form of magnesium bound to glycine, offering enhanced absorption and gentle GI tolerance. It is widely used to correct magnesium deficiency and support overall nervous system and muscle health.

benefits

Main effects with level of evidence

Moderate

Note on evidence

Human clinical trials and reviews support benefits for sleep, muscle cramps, and relaxation, but some uses require more research.

Improves sleep quality

Moderate

May help regulate neurotransmitters and enhance melatonin function, with studies showing improved sleep efficiency and reduced insomnia in older adults.

Particularly relevant for: Older adults · Individuals with sleep problems

S2 · Randomized clinical trial: Effects of magnesium supplementation on insomnia in elderly.

Reduces anxiety and stress

Moderate

Supports normal nervous system function and may lower subjective anxiety or stress according to meta-analyses.

Particularly relevant for: Individuals with anxiety · People experiencing stress

S3 · Magnesium supplementation in the treatment of anxiety: A systematic review

Supports muscle relaxation and reduces cramps

Moderate

Facilitates muscle contraction/relaxation and may reduce leg cramps, including in pregnancy.

Particularly relevant for: Pregnant individuals · Athletes · People prone to muscle cramps

S1 · NIH Office of Dietary Supplements: Magnesium Fact Sheet for Health Professionals S7 · Cochrane: Magnesium supplementation in pregnancy

Addresses magnesium deficiency

Strong

Effectively increases magnesium levels with lower GI side effects compared to some other forms.

Particularly relevant for: People with magnesium deficiency

S1 · NIH Office of Dietary Supplements: Magnesium Fact Sheet for Health Professionals S5 · Examine.com: Magnesium Bisglycinate

Safety & Information

Important safety information & known risks

For educational purposes only • not medical advice

Generally safe at recommended doses for healthy adults, but caution is needed in those with kidney impairment or when used with certain medications.

warning notices

GI disturbance (loose stools) can occur at higher doses.
Contraindicated in advanced kidney disease due to impaired magnesium clearance and risk of toxicity.
Possible interactions with antibiotics, bisphosphonates, and other medications affecting magnesium balance.
Avoid use in people with severe kidney impairment or failure due to risk of hypermagnesemia.
Use caution and monitor closely when combining with certain antibiotics or bisphosphonates, as magnesium can reduce their absorption.
Discontinue use and consult a clinician if symptoms of hypermagnesemia occur (such as weakness, difficulty breathing, or irregular heartbeat).

Known interactions with medications