Dr. Mercola MSM, Methylsulfonylmethane Sulfur Complex, 60 Capsules supplement bottle
Dr. Mercola

MSM, Methylsulfonylmethane Sulfur Complex, 60 Capsules

What We Researched
4 active ingredients analyzed · 3 inactive ingredients decoded · 4 brand certifications checked · 3 retailers compared · Last updated: Mar 2026
75
Product Score Fair
81
Brand Score Good

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
OptiMSM® (Methylsulfonylmethane) 1,000 mg *
Trimethylglycine (TMG) 100 mg *
R-Alpha Lipoic Acid(from Na-RALA Sodium R-Lipoate) 25 mg *
Dr. Mercola's Sulfur Blend[Organic Broccoli (Whole Plant), Organic Garlic (Bulb), Organic Green Cabbage (Whole Plant), Organic Kale (leaf)) 25 mg *
Bioavailability Excellent

Absorption Rating

  • OptiMSM® (Methylsulfonylmethane) Good
  • Trimethylglycine (TMG) Good
  • R-Alpha Lipoic Acid(from Na-RALA Sodium R-Lipoate) Good
  • Dr. Mercola's Sulfur Blend[Organic Broccoli (Whole Plant), Organic Garlic (Bulb), Organic Green Cabbage (Whole Plant), Organic Kale (leaf)) Good
Other Ingredients Excellent

Fillers & Additives

  • Microcrystalline Cellulose
  • Capsule (Hydroxypropyl Methylcellulose)
  • Silicon Dioxide
Efficacy Very Poor

Dosage Analysis

  • OptiMSM® (Methylsulfonylmethane) 1,000 mg Under-dosed
  • Trimethylglycine (TMG) 100 mg Under-dosed
  • R-Alpha Lipoic Acid(from Na-RALA Sodium R-Lipoate) 25 mg Under-dosed

Supplement Facts

Ingredient Amount % Daily Value
OptiMSM® (Methylsulfonylmethane) 1,000 mg *
Trimethylglycine (TMG) 100 mg *
R-Alpha Lipoic Acid(from Na-RALA Sodium R-Lipoate) 25 mg *
Dr. Mercola's Sulfur Blend[Organic Broccoli (Whole Plant), Organic Garlic (Bulb), Organic Green Cabbage (Whole Plant), Organic Kale (leaf)) 25 mg *

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Microcrystalline Cellulose Safe

Adds bulk to small-dose supplements to make tablets/capsules a manageable size.

Capsule (Hydroxypropyl Methylcellulose) Safe

It provides a vegetarian encapsulation option.

Silicon Dioxide Safe

Prevents clumping and ensures consistent dosing.

Price Comparison

Price History

Tracked across major retailers. Updated periodically.

$23$22$21$19$18 Mar 12 $21.25$20.00
iHerb
Vitacost

Prices shown at time of last check. Click a retailer to see current price. GoodSupp is not affiliated with any retailer.

Brand Trust Report
Dr. Mercola

Founded 1997 · Cape Coral, Florida, USA · 209 products · mercola.com/

Certifications

4 certifications
Consumerlab Verified Source
Nsf Gmp Verified Source
Usda Organic Verified Source
Fda Gmp Inspections Verified Source

Transparency

2 claims
Third Party Testing Claim — Verified Source

Violation History

7 incidents
Prop 65 Lead2025-04-18Source
Lawsuit Wrongful termination and breach of a severance contract by the former CEO.2024Source
Fda Warning Unapproved and misbranded products related to Coronavirus Disease 2019 (COVID-19).2021-02-18Source
Lawsuit False and unsupported claims that its indoor tanning systems are safe and do not increase the risk of skin cancer.2016Source
Fda Warning Illegal marketing of a medical device.2011-01-01Source
Fda Warning Illegal drug claims for various supplements.2006-01-01Source
Fda Warning Illegal drug claims for various supplements.2005-01-01Source
Related Supplements
Frequently Asked Questions
Is Dr. Mercola MSM, Methylsulfonylmethane Sulfur Complex a good supplement?

Dr. Mercola MSM, Methylsulfonylmethane Sulfur Complex, 60 Capsules received a product quality score of 75/100 in GoodSupp's independent analysis, suggesting some areas that could be improved. The product contains 4 active ingredients with 30 servings per container. All 3 inactive ingredients (fillers, binders, capsule materials) are rated safe — a clean formulation with no flagged additives. The manufacturer, Dr. Mercola, holds a brand trust score of 81/100 with 4 verified certifications including Consumerlab, Nsf Gmp, Usda Organic, Fda Gmp Inspections.

What are the ingredients in Dr. Mercola MSM, Methylsulfonylmethane Sulfur Complex?

Dr. Mercola MSM, Methylsulfonylmethane Sulfur Complex contains 4 active ingredients: OptiMSM® (Methylsulfonylmethane) (1,000 mg), Trimethylglycine (TMG) (100 mg), R-Alpha Lipoic Acid(from Na-RALA Sodium R-Lipoate) (25 mg), Dr. Mercola's Sulfur Blend[Organic Broccoli (Whole Plant), Organic Garlic (Bulb), Organic Green Cabbage (Whole Plant), Organic Kale (leaf)) (25 mg). Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Dr. Mercola MSM, Methylsulfonylmethane Sulfur Complex safe to take?

Dr. Mercola MSM, Methylsulfonylmethane Sulfur Complex, 60 Capsules has been analyzed for ingredient safety across all its components. All 3 inactive ingredients — including capsule materials, fillers, and binders — are rated safe based on regulatory data and published safety research. This is a clean formulation with no controversial additives. Always consult your healthcare provider before starting any new supplement, especially if you take medications or have underlying health conditions.

Is Dr. Mercola a trustworthy supplement brand?

Dr. Mercola receives a brand trust score of 81/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 1997 and headquartered in Cape Coral, Florida, USA, the company offers 209 products in their lineup. They hold 4 verified certifications including Consumerlab, Nsf Gmp, Usda Organic, Fda Gmp Inspections. Third-party certifications are independently verified and indicate the brand meets specific quality, purity, and manufacturing standards. Note: Dr. Mercola has 7 historical regulatory incidents on record, which are factored into the trust score.

How to take turmeric?

This is an important question for supplement consumers. The dietary supplement industry is largely self-regulated, which means product quality, ingredient transparency, and safety practices vary significantly between brands and products. The most reliable way to evaluate any supplement is to check for third-party testing certifications, review the full ingredient list and dosages, and research the brand's regulatory track record. GoodSupp's database of over 250,000 analyzed products provides independent quality scores, ingredient safety ratings, and brand trust reports to help you make evidence-based decisions.

How to use turmeric?

This is an important question for supplement consumers. The dietary supplement industry is largely self-regulated, which means product quality, ingredient transparency, and safety practices vary significantly between brands and products. The most reliable way to evaluate any supplement is to check for third-party testing certifications, review the full ingredient list and dosages, and research the brand's regulatory track record. GoodSupp's database of over 250,000 analyzed products provides independent quality scores, ingredient safety ratings, and brand trust reports to help you make evidence-based decisions.

How to take turmeric for inflammation?

This is an important question for supplement consumers. The dietary supplement industry is largely self-regulated, which means product quality, ingredient transparency, and safety practices vary significantly between brands and products. The most reliable way to evaluate any supplement is to check for third-party testing certifications, review the full ingredient list and dosages, and research the brand's regulatory track record. GoodSupp's database of over 250,000 analyzed products provides independent quality scores, ingredient safety ratings, and brand trust reports to help you make evidence-based decisions.

Scan Any Supplement Instantly

Download GoodSupp to scan barcodes, check ingredient safety, and find the best supplements for your needs.

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.