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Magnesium stearate: safe or toxic?

Most people know about magnesium threonate, in fact, magnesium stearate is also a common supplement, how does it differ from magnesium threonate in its effectiveness? Let’s take a look together

Magnesium stearate is an organic compound with the chemical formula C36H70MgO4 and a molecular weight of 591.24. It usually appears as a white, non-grit, fine powder with a slight peculiar odor and a slippery sensation on contact with the skin. This substance is insoluble in water, ethanol or ether.

Where is stearic acid found?
– Animal fats
– Butter
– Lard
– Vegetable oils
– cocoa butter


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Magnesium stearate has a wide range of applications in medicine and has the following properties:

01Lubrication of intestines: magnesium stearate has a lubricating effect, which can promote gastrointestinal peristalsis and regulate intestinal function, helping to relieve constipation, enhance digestion and increase appetite.

02 Anti-inflammatory: magnesium stearate can inhibit the growth of bacteria such as Escherichia coli, Pseudomonas aeruginosa, etc., which is an aid in the treatment of infectious diseases.

03 Promote wound healing: for skin burns and scalds, pressure sores and ulcers, magnesium stearate plays a role in promoting the repair of the mucous membrane of the wound, and can shorten the recovery time.


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Is it safe or dangerous?

Magnesium stearate is classified as a GRAS and is generally considered safe, with an intake of 2,500 milligrams of magnesium stearate per kilogram of body weight per person considered safe. This means that a person weighing about 150 pounds could consume 170,000 mg of magnesium stearate per day and still be in the safe range.

But the side effects are not to be underestimated if taken in excess,what are its side-effects?

♦Allergic reaction: If the patient is allergic to magnesium stearate or its components, symptoms such as itching, redness and swelling of the skin, and may even be accompanied by respiratory difficulties, may occur after use.

♦Gastrointestinal discomfort: magnesium stearate has a certain degree of irritation, after use may cause irritation to the gastric mucosa, causing abdominal pain, diarrhea, nausea and vomiting and other uncomfortable symptoms.

Skin irritation: when magnesium stearate comes into contact with the skin, it may cause skin irritation, redness, swelling, pain and other discomfort symptoms.

♦Liver damage: Long-term intake of magnesium stearate in large quantities will increase the metabolic burden on liver cells, which in turn may trigger liver damage.

Kidney damage: Magnesium stearate may also affect the function of renal tubules, leading to increased protein content in urine, and may even induce hyperphosphatemia.


Magnesium Stearate

Magnesium Stearate powder in Natural Field

is widely used in the manufacture of dietary supplements and tablets, capsules and powders, as well as in many food products, including a wide variety of confections, flavors, and bakery ingredients, and is safe for judicious use in prescribed dosages.

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Magnesium stearate powder, please contact us via