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Joint Health

Glucosamine Sulfate

Also known as: Glucosamine

A
Evidence

The most studied form for joint health. Building block for cartilage. Works over weeks-months.

Last reviewed June 2026 · Evidence graded from peer-reviewed research, not editorial opinion. Educational only — not medical advice.

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Primary uses

  • Joint health
  • Cartilage support
  • Osteoarthritis

How it works

  • Provides building blocks for cartilage
  • May slow cartilage degradation
  • Anti-inflammatory effects

Dosage

Typical range
1500mg daily (often split)
Timing
With or without food
With food
Optional (may reduce GI)
Duration
3-6 months for effect
Special populations
Osteoarthritis, joint wear

Forms

  • Sulfate crystalline
  • HCl

Safety

Common side effects

  • Mild GI upset
  • Headache

Contraindications

  • Shellfish allergy (if derived from shellfish)

Products containing Glucosamine Sulfate

Top-scoring supplements in our catalog that list Glucosamine Sulfate on the label. Each product is graded on Formulate's ingredient-level rubric — dose accuracy, form, transparency, and third-party testing.

Thorne
Glucosamine
91
Complement
ForHer Hormone Balance and Longevity Multivitamin for Women
89
Thorne
Joint Support Nutrients
87
See all products →

Evidence notes

Well-studied for OA, sulfate form preferred

Grade A: Multiple well-designed human trials support the main claims.

Cited research for Glucosamine Sulfate

Clinical studies referenced across Formulate guides that mention glucosamine sulfate. Each links to the full study page with PubMed source + the guides that cite it.

Glucosamine Sulfate compared head-to-head

Related in Joint Health

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Medical disclaimer. This page is educational and does not replace advice from a qualified healthcare provider. Individual needs and risks vary — consult a professional before starting, stopping, or combining supplements, especially if you are pregnant or nursing, taking medication, or managing a health condition.