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Pentosan Polysulfate (Pentosan Polysulfate Sodium)

Category: Healing & Recovery. Status: FDA Approved.

A semi-synthetic polysulfated xylan with anticoagulant and fibrinolytic properties. FDA-approved for interstitial cystitis, also researched for osteoarthritis and cartilage repair.

How it works

Acts as a glycosaminoglycan analog that coats bladder mucosa, inhibits complement activation, and stimulates proteoglycan synthesis in cartilage.

Key facts

  • Molecular weight: 4000-6000 Da (average)
  • Half-life: ~24 hours
  • Bioavailability: ~3-6% oral; higher via injection
  • Storage: Room temperature, protected from moisture.

Dosing overview

  • Typical dose: 100 mg
  • Frequency: 3x daily (oral)
  • Duration: 3-6 months
  • Route: Oral or subcutaneous injection

Protocol notes

  • For interstitial cystitis (the FDA-approved use), the standard is 100 mg three times daily by mouth.
  • For joint/cartilage goals, some use a subcutaneous injection course (typically a few mg per dose, 1-2x weekly) instead of oral.
  • Effects build slowly - most regimens run a minimum of 3 months before judging benefit.

Reported benefits

  • Bladder wall protection
  • Cartilage repair support
  • Anti-inflammatory action
  • Joint pain reduction

Possible side effects

  • GI upset
  • Headache
  • Hair thinning (rare)
  • Mild bleeding risk

Research

  • Pentosan polysulfate for osteoarthritis treatment (2020): Showed disease-modifying effects on osteoarthritis progression in clinical trials.
  • Efficacy in interstitial cystitis management (2017): Significant improvement in pain and urgency symptoms in 38% of treated patients.

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Research and educational reference only. Not medical advice.