Pentosan Polysulfate (PPS)
Also known as: Elmiron, Fibrogamone
A sulfated polysaccharide that inhibits cartilage-degrading enzymes, promotes synovial fluid production, and reduces inflammatory mediators in joint tissue for osteoarthritis management.
Research Status
FDA-approved
For research purposes only. Not approved for human use. Not medical advice.
Research Areas
Side Effects
Most common side effect. Usually resolves with continued use or by taking with food. Occurs in 10-15% of users in clinical trials.
Reported in 3-5% of users. Typically mild and self-resolving.
Skin reactions reported in 1-3% of users. May indicate hypersensitivity; discontinue if severe.
PPS has mild anticoagulant properties. Risk increases with concurrent anticoagulants (warfarin, DOACs) or antiplatelet agents. Monitor for unusual bleeding; inform healthcare provider.
Transient elevation of ALT/AST reported in <1% of users. Typically asymptomatic and reversible. Baseline and periodic liver function monitoring recommended.
Rare case reports in long-term users. Mechanism unclear; may be related to cumulative polysulfate effects. Reversible upon discontinuation.
Very rare but documented. Symptoms include urticaria, angioedema, dyspnea, hypotension. Seek immediate medical attention if suspected.
Dosing Reference
| Parameter | Value |
|---|---|
| Dose range | 100-300 mg |
| Frequency | 2-3x daily |
| Timing | With meals to improve absorption and reduce gastrointestinal upset |
| Route | Subcutaneous |
Oral administration is standard for PPS. Injectable formulations (IM/IV) are used in some clinical settings outside the US. For research purposes, follow institutional protocols and regulatory guidance. Effects typically appear after 4-8 weeks of consistent use.
Research disclaimer
Figures drawn from published research literature and community logs. Not clinical recommendations. Consult a qualified professional. Research use only.
Reconstitution Guide
Do not use saline or bacteriostatic saline — use only bacteriostatic water for reconstitution
Do not shake the vial vigorously; gentle swirling prevents peptide degradation
Discard immediately if the solution appears cloudy, discolored, or contains visible particles
Use within 30 days of reconstitution when stored at 2–8°C
Do not freeze the reconstituted solution; freezing may denature the peptide
Use the PeptideVolt reconstitution calculator for your exact concentration
Molecular and Pharmacological Data
| Molecular weight | 4000-6000 Da (polysaccharide polymer) |
| Half-life | 4-6 hours (oral); 24-48 hours (tissue accumulation) |
Pentosan polysulfate works by inhibiting cartilage-degrading enzymes (matrix metalloproteinases and serine proteases), reducing inflammatory cytokines in synovial fluid, and enhancing the viscoelastic properties of joint fluid. It also appears to stabilize the cartilage matrix and promote chondrocyte survival, thereby slowing osteoarthritic progression.
Matrix Metalloproteinase (MMP) Inhibition
PPS suppresses MMP-2, MMP-9, and other collagenases that degrade cartilage extracellular matrix, reducing cartilage loss in osteoarthritis
Inflammatory Cytokine Reduction
Decreases production of IL-1β, TNF-α, and other pro-inflammatory mediators in synovial tissue and fluid, reducing joint inflammation
Synovial Fluid Enhancement
Increases hyaluronic acid production and improves synovial fluid viscosity and lubrication properties, reducing friction and pain
Chondrocyte Protection
Promotes chondrocyte survival and reduces apoptosis, helping preserve functional cartilage cells
- PPS is a semi-synthetic sulfated polysaccharide derived from beechwood hemicellulose, not a peptide in the classical sense
- Accumulates in cartilage and synovial tissue over weeks, explaining delayed onset of clinical benefit
- Exhibits both anti-inflammatory and anti-catabolic properties in osteoarthritis models
- Oral bioavailability is low (~3%), but systemic and local joint accumulation occurs with repeated dosing
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View all peptidesResearch Use Only. All content on this page is provided for informational and educational purposes related to scientific research. Pentosan Polysulfate (PPS) is not approved for human use by the FDA or any equivalent regulatory body. This is not medical advice. Do not use any substance discussed here for therapeutic, diagnostic, or preventative purposes. Consult a qualified healthcare professional before making any health-related decisions. The Peptide Volt does not endorse the use of any research chemicals. 18+ only.