General Dosage
700mg daily (RDA for adults); most people exceed this through diet alone
Maximum dose: 4,000mg/day (NIH UL for adults 19-70); 3,000mg for those over 70
Phosphorus Dosage Guide
This content is for informational purposes only and does not constitute medical advice. Consult your healthcare provider before starting any supplement. Full disclaimer
Dosage Recommendations
General recommendation: 700mg daily (RDA for adults); most people exceed this through diet alone
Timing: With meals; maintain balanced intake with calcium for optimal bone health • Take with food for best absorption.
Dosage by Condition
| Condition | Recommended Dose | Evidence |
|---|---|---|
| Hypophosphatemia | As directed by physician — typically IV or oral phosphate salts | Strong |
| Athletic pH buffering | 50mg/kg sodium phosphate loading over 3-6 days before competition | Emerging |
| General bone health | Adequate dietary intake (700mg) with balanced calcium:phosphorus ratio | Strong |
Upper limit: 4,000mg/day (NIH UL for adults 19-70); 3,000mg for those over 70
Timing & Absorption
With meals; maintain balanced intake with calcium for optimal bone health
Best taken with food for optimal absorption.
References
- Calvo MS, Uribarri J (2013). Public health impact of dietary phosphorus excess on bone and cardiovascular health in the general population. American Journal of Clinical Nutrition. DOI PubMed
- Buck CL, Wallman KE, Dawson B, Guelfi KJ (2013). Sodium phosphate as an ergogenic aid. Sports Medicine. DOI PubMed
- Takeda E, Yamamoto H, Yamanaka-Okumura H, Taketani Y (2012). Dietary phosphorus in bone health and quality of life. Nutrition Reviews. DOI PubMed