What is magnesium glycinate used for?

Magnesium glycinate is used to correct or prevent low magnesium levels and to support normal muscle, nerve, and sleep function. It is a popular form because it is well absorbed and less likely to cause digestive upset than some other forms.

Do I need a prescription for magnesium glycinate?

No. Magnesium glycinate is an over-the-counter dietary supplement, so no prescription is required. It is still a good idea to check with your healthcare provider before starting, especially if you take other medications or have kidney problems.

What is the difference between magnesium glycinate and other forms of magnesium?

Magnesium glycinate is chelated to the amino acid glycine, which improves absorption and reduces the laxative effect seen with forms like magnesium oxide or citrate. This makes it a common choice for daily supplementation.

How much magnesium glycinate should I take daily?

A typical adult dose is one 120mg capsule once or twice daily with food, or as directed by your provider. Total supplemental magnesium should generally not exceed 350mg of elemental magnesium per day unless a provider advises otherwise.

Does magnesium glycinate help with sleep?

Magnesium plays a role in normal nervous system function, and some people take the glycinate form in the evening to support sleep quality. Evidence is mixed, and it should not replace medical care for a diagnosed sleep disorder.

How does ordering and shipping work?

Place your order online and our team reviews it before it ships from our licensed U.S. pharmacy. Most orders are processed quickly and delivered to your door with tracking provided.

Can magnesium glycinate interact with medications?

Yes. Magnesium can reduce the absorption of certain antibiotics, thyroid medication, and bisphosphonates, so doses should be separated by several hours. Tell your provider or pharmacist about all medications you take.

Magnesium Glycinate 120mg

Name: Magnesium Glycinate 120mg
Brand: All Family Pharmacy
SKU: magnesium-glycinate-120mg
Availability: InStock

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Magnesium Glycinate 120mg — All Family Pharmacy

Magnesium glycinate is a chelated form of magnesium bound to the amino acid glycine, known for gentle absorption and low risk of digestive upset. It is used to correct or prevent low magnesium levels and to support normal muscle, nerve, and sleep function. Your order ships from a licensed U.S. pharmacy after review — no prescription needed for this over-the-counter supplement.

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30-day supply · $0.28/capsule

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Buy Magnesium Glycinate 120mg Capsules Online

A highly absorbable magnesium supplement commonly used for magnesium deficiency, muscle cramps, and sleep support

Medically reviewed by David Paul Mackarey, RPh, Pharmacist-in-Charge

Magnesium Glycinate 120mg Quick Facts

Drug class	Mineral dietary supplement
Treats	Low magnesium levels, muscle cramps, sleep support, general magnesium supplementation
Form	Capsule
Typical dosing	Take up to 3 capsules by mouth daily.
Prescription required	No — available over the counter

What Is Magnesium Glycinate 120mg?

Magnesium glycinate 120mg is an over-the-counter dietary supplement that provides magnesium in a chelated form bound to glycine. Magnesium is an essential mineral involved in hundreds of enzyme reactions, including those that support muscle function, nerve signaling, heart rhythm, and bone health. The glycinate form is often chosen because it tends to be well absorbed and gentler on the stomach than some other magnesium salts. As a dietary supplement, it is not FDA-approved to diagnose, treat, cure, or prevent any disease.

What Does Magnesium Glycinate 120mg Treat?

Magnesium deficiency (low magnesium levels)
Dietary magnesium supplementation
Muscle cramp support
Sleep quality support
General nervous system support
Bone health support

Magnesium Glycinate 120mg Dosage

Adults: 1 capsule (120mg) by mouth once or twice daily with food, or as directed by a healthcare provider.
Do not exceed 350mg elemental magnesium per day from supplements unless directed by a provider.

Your prescriber will determine the dose and duration that are right for you. Always follow the directions on your prescription label.

Magnesium Glycinate 120mg Side Effects

Common side effects

Diarrhea
Stomach upset
Nausea
Abdominal cramping
Bloating
Soft stools

Serious side effects

Stop taking this medication and seek medical attention right away if you experience:

Signs of high magnesium (muscle weakness, confusion, very slow heartbeat)
Severe or persistent diarrhea
Difficulty breathing
Irregular heartbeat
Severe allergic reaction (rash, swelling, trouble breathing)

Warnings & Interactions

Do not use with kidney disease or reduced kidney function without provider guidance
May reduce absorption of certain antibiotics (tetracyclines, fluoroquinolones) — separate doses by 2–4 hours
Separate from bisphosphonates and levothyroxine by several hours
High doses can cause diarrhea and, rarely, magnesium toxicity
Consult a provider before use if pregnant, breastfeeding, or taking heart or blood pressure medications
Keep out of reach of children

Tell your prescriber about all medications, supplements, and health conditions before starting magnesium glycinate 120mg.