Magnesium Stearate

Safe LubricantSynthetic

Magnesium Stearate is a synthetic lubricant used in dietary supplements. Safety rating: Safe. It is widely considered safe at typical supplement doses. Found in 20 supplements in the GoodSupp database. A magnesium salt of stearic acid used as a lubricant in manufacturing.

20 Products use this
Safe Safety rating
Lubricant Category
No Natural origin

Safety Verdict: Safe

Extensively studied; safe at supplement levels. Some concern is overstated.

What is Magnesium Stearate?

A magnesium salt of stearic acid used as a lubricant in manufacturing.

Common Names Magnesium Stearate, mag stearate,vegetable magnesium stearate
Type Lubricant
Origin Synthetic / Manufactured
Safety Rating Safe

Why is Magnesium Stearate used in supplements?

Prevents ingredients from sticking to manufacturing equipment during tableting.

Role in supplements: Lubricant — prevents ingredients from sticking to manufacturing equipment during tableting and encapsulation.

Should you be concerned about Magnesium Stearate?

No. Magnesium Stearate is widely regarded as safe for use in dietary supplements at typical levels. It has a long history of use and is accepted by major regulatory bodies.

Extensively studied; safe at supplement levels. Some concern is overstated.

No action needed. This ingredient is safe at amounts used in supplements.

Top-rated products containing Magnesium Stearate

These 20 highest-scoring supplements in our database use Magnesium Stearate.

Swanson Lithium Orotate, 5 mg, 60 Veggie Capsules
Swanson Lithium Orotate, 5 mg, 60 Veggie Capsules
Product 100 Brand N/A
California Gold Nutrition Selenium, Yeast-Free, 200 mcg, 180 Veggie Capsules
California Gold Nutrition Selenium, Yeast-Free, 200 mcg, 180 Veggie Capsules
Product 100 Brand N/A
California Gold Nutrition Resveratrol Complex with Grape Seed Extract, Red Wine Extract, and trans-Resveratrol, 60 Veggie Capsules
California Gold Nutrition Resveratrol Complex with Grape Seed Extract, Red Wine Extract, and trans-Resveratrol, 60 Veggie Capsules
Product 100 Brand N/A
California Gold Nutrition L-Glutathione (Reduced), 500 mg, 30 Veggie Capsules
California Gold Nutrition L-Glutathione (Reduced), 500 mg, 30 Veggie Capsules
Product 100 Brand N/A
California Gold Nutrition L-Glutathione (Reduced), 500 mg, 120 Veggie Capsules
California Gold Nutrition L-Glutathione (Reduced), 500 mg, 120 Veggie Capsules
Product 100 Brand N/A
Swanson Probiotic, 120 Capsules (1 Billion CFU per Capsule)
Swanson Probiotic, 120 Capsules (1 Billion CFU per Capsule)
Product 100 Brand N/A
Swanson FemFlora, Probiotic For Women, 9.8 billion CFU, 60 Vegan Capsules
Swanson FemFlora, Probiotic For Women, 9.8 billion CFU, 60 Vegan Capsules
Product 100 Brand N/A
California Gold Nutrition Magnesium Bisglycinate Chelate, Albion TRAACS®, 240 Veggie Capsules (100 mg per Capsule)
California Gold Nutrition Magnesium Bisglycinate Chelate, Albion TRAACS®, 240 Veggie Capsules (100 mg per Capsule)
Product 100 Brand N/A
California Gold Nutrition Magnesium Bisglycinate Chelate, Albion TRAACS®, 60 Veggie Capsules (100 mg per Capsule)
California Gold Nutrition Magnesium Bisglycinate Chelate, Albion TRAACS®, 60 Veggie Capsules (100 mg per Capsule)
Product 100 Brand N/A
Swanson Zinc Picolinate, 22 mg, 60 Vegan Capsules
Swanson Zinc Picolinate, 22 mg, 60 Vegan Capsules
Product 100 Brand N/A
Nature's Way Vitex Fruit, 400 mg, 100 Vegan Capsules
Nature's Way Vitex Fruit, 400 mg, 100 Vegan Capsules
Product 100 Brand N/A
Youtheory Men®, Shilajit, 60 Veg Caps (250 mg per Capsule)
Youtheory Men®, Shilajit, 60 Veg Caps (250 mg per Capsule)
Product 100 Brand N/A
California Gold Nutrition Ashwagandha, 450 mg, 180 Veggie Capsules
California Gold Nutrition Ashwagandha, 450 mg, 180 Veggie Capsules
Product 100 Brand N/A
ALLMAX Essentials, Ashwagandha KSM-66®, 60 Capsules (300 mg per Capsule)
ALLMAX Essentials, Ashwagandha KSM-66®, 60 Capsules (300 mg per Capsule)
Product 100 Brand N/A
Swanson Ashwagandha Extract, Standardized, 450 mg, 60 Capsules
Swanson Ashwagandha Extract, Standardized, 450 mg, 60 Capsules
Product 100 Brand N/A
Swanson NAC, 600 mg, 100 Vegan Capsules
Swanson NAC, 600 mg, 100 Vegan Capsules
Product 100 Brand N/A
Nature's Way Zinc Chelate, 30 mg, 100 Capsules
Nature's Way Zinc Chelate, 30 mg, 100 Capsules
Product 100 Brand N/A
Swanson Folate, 30 Veggie Caps (680 mcg DFE per Cap)
Swanson Folate, 30 Veggie Caps (680 mcg DFE per Cap)
Product 100 Brand N/A
Swanson Folate, High Potency, 30 Veggie Caps (800 mcg per Capsule)
Swanson Folate, High Potency, 30 Veggie Caps (800 mcg per Capsule)
Product 100 Brand N/A
Swanson Pantothenic Acid, 500 mg, 250 Capsules
Swanson Pantothenic Acid, 500 mg, 250 Capsules
Product 100 Brand N/A
Related Ingredients
Frequently Asked Questions
Is Magnesium Stearate safe in supplements?

Yes. Magnesium Stearate is rated safe for use in dietary supplements at typical levels. This rating is based on regulatory assessments, published safety research, and its long history of use in the supplement industry. It is widely accepted by major regulatory bodies including the FDA and EFSA. Extensively studied; safe at supplement levels. Some concern is overstated. In GoodSupp's database, 20 products contain this ingredient. Consult your healthcare provider if you have specific concerns.

What is Magnesium Stearate and why is it in my supplement?

A magnesium salt of stearic acid used as a lubricant in manufacturing. As a lubricant, it prevents ingredients from sticking to manufacturing equipment during the tableting and encapsulation process, ensuring consistent production. It appears in 20 products in the GoodSupp database.

Is Magnesium Stearate natural or synthetic?

Magnesium Stearate is synthetically produced, meaning it is manufactured through chemical processes rather than directly extracted from natural sources. Synthetic ingredients are extremely common in supplements and are not inherently less safe than natural alternatives. In many cases, synthetic production allows for higher purity and more consistent quality. The FDA regulates both natural and synthetic supplement ingredients under the same safety standards. GoodSupp rates ingredients based on their actual safety data regardless of whether they're natural or synthetic.

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Disclaimer: GoodSupp provides independent supplement quality analysis for informational purposes only. Scores are generated algorithmically based on ingredient profiles, brand certifications, and public records. This is not medical advice. Always consult a healthcare professional before starting any supplement regimen. Product data is sourced from manufacturer labels and public databases. GoodSupp is not affiliated with any supplement brand.