US
U.S.DOCTORS'CLINICAL

U.S. Doctors' Clinical Mega MSM Joint Supplement

  • Item Form: Capsule
  • Dosage Form: Capsule
  • Product Benefits: Ligament
  • Flavor: Unflavored

Last refreshed Aug 4, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.

Our verdict

A combination MSM, vitamin C, collagen and neem capsule aimed at joint and connective tissue support, for buyers who want several joint ingredients in one product.

As an Amazon Associate I earn from qualifying purchases. ProductDome earns a commission when you buy through links on this page.

ASIN: B00ICUUSHACategory: MSM Supplements

Overview

This MSM joint supplement combines MSM with vitamin C, collagen and neem in a capsule formula, sold as a one month supply of 120 gluten free capsules.

The formula stacks MSM, a common joint support sulfur compound, with vitamin C and collagen, ingredients often paired since vitamin C supports the body's own collagen production. Neem is a less typical addition here and its role is not detailed beyond being listed as an ingredient. The product name markets itself as clinically proven, a claim this data does not let us verify.

  • MSM plus vitamin C, collagen and neem
  • 120 gluten free capsules
  • One month supply
  • Marketed for cartilage, tendon and ligament support

Who it's for

Someone looking for a combination joint supplement rather than single ingredient MSM, wanting vitamin C and collagen included in the same capsule.

Pros and cons

Pros
  • Combines MSM, vitamin C and collagen in one capsule
  • 120 capsules, a full month supply
Cons
  • Neem's role in the formula is not explained
  • Four capsules a day is more pills than plain MSM products
  • Clinically proven claim in the title is not detailed in the data

Performance notes

Pairing MSM with vitamin C follows common supplement logic since vitamin C is a cofactor in collagen synthesis, so combining the two saves taking separate pills. At 120 capsules for a stated one month supply, the daily dose works out to four capsules a day.

Specifications

BrandU.S.DOCTORS'CLINICAL
Dimensions & fit
Item Weight0.3 poundslower than 70% of 24 msm supplements
Item Dimensions2.5 × 2.5 × 4.6 inches
Capacity & performance
Age Range DescriptionAdult
Construction & materials
Material FeaturesCertified Organic
Included components
Unit Count120
Other details
Item FormCapsule
Dosage FormCapsule
Product BenefitsLigament
FlavorUnflavored
Container TypeBottle
Diet TypeGluten Free
Number Of Items1
Special IngredientsMethylsulfonylmethane

Closest rivals on specs

Swanson MSM 1000 mg 120 Capsules
  • Item Weight 0.3 vs 0.26 pounds (+15%)
MRM Nutrition MSM 1000 mg Capsules
  • Item Weight 0.3 vs 0.39 pounds (-23%)
Source Naturals MSM Powder 16 oz
  • Item Weight 0.3 vs 0.1 pounds (+200%)
Compare all side by side

Frequently asked questions

How many capsules are in one bottle of U.S. Doctors' Clinical Mega MSM?

120 capsules, a one month supply.

Is this MSM supplement gluten free?

Yes.

What else is in the formula besides MSM?

Vitamin C, collagen and neem.