Pentosan Polysulfate
PEN-toe-san poly-SUL-fate
A semi-synthetic compound being explored for longevity — may support joint health and reduce cellular senescence.
Also known as: Elmiron, PPS
FDA approved for: Interstitial cystitis/bladder pain syndrome (Elmiron)
Last reviewed: April 2026
What It Does
Originally approved for bladder pain, pentosan polysulfate has gained interest in longevity medicine for its potential to reduce cellular senescence (zombie cells) and support joint health. It mimics natural glycosaminoglycans that protect tissue surfaces.
Why People Take It
How It's Administered
Oral
Capsule taken on empty stomach
Frequency
3 times daily (or as directed)
Pain Level
○○○ None
Self-Administered
Yes — at home
Typical Range
100mg three times daily
What To Expect
Month 1–2
Joint comfort may begin improving.
Month 3–6
Full joint and tissue benefits.
Side Effects
Overall: Mild to Moderate
Common (1–10%)
GI upset
Nausea or diarrhea, especially initially.
Uncommon (0.1–1%)
Hair thinning
Reported with long-term use. Reversible.
Rare (<0.1%)
Vision changes
Macular changes reported with very long-term use. Regular eye exams recommended.
Call your doctor if you experience this.
Who Should NOT Take This
• Bleeding disorders
• Recent surgery
• Known allergy to PPS
Drug Interactions
• Anticoagulants — may increase bleeding risk
• NSAIDs — additive GI risk
Pregnancy: Not recommended during pregnancy.
Clinical Details
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Half-Life
~20–27 hours
Bioavailability
~3% (oral — low but sufficient for tissue effects)
Mechanism of Action
Semi-synthetic heparinoid that mimics glycosaminoglycans. Coats bladder epithelium (approved use). Longevity interest centers on potential GAG-layer restoration in joints and emerging senolytic properties. Inhibits complement activation and has anti-inflammatory effects.
Published Research
Pentosan Polysulfate for Osteoarthritis (2019) ↗Compare With Similar Peptides
Both have longevity interest. Rapamycin targets mTOR/autophagy. PPS targets tissue protection/senescence through different pathways.
Open Full Comparison Tool →Frequently Asked Questions
This is a compounded medication prescribed off-label. It has not been FDA-approved for the uses described. All prescribing decisions are made by your independent licensed provider.