Calcium Acetate
Phoslo is a brand-name phosphate binder medication used to treat elevated phosphate levels (hyperphosphatemia) in patients with chronic kidney disease, particularly those on dialysis. The active ingredient is calcium acetate, which works by binding to dietary phosphate in the intestines to prevent its absorption into the bloodstream.
Phoslo is a calcium-based phosphate binder used to manage high phosphate levels in patients with chronic kidney disease.
Key facts at a glance
- RxNorm
- 219236
- Generic
- Phoslo
- Class
- brand-name
- Brands
- —
- Availability
- rx
- Lactation
- unknown
- Routes
- —
- Forms
- —
- Regions
- US, EU, CN, JP
- Monitoring
- —
This page is for informational purposes only.
Do not use this information to diagnose yourself or to replace a physician's advice. Always consult a qualified healthcare provider before starting, stopping, or changing any medication. If you believe you are experiencing a medical emergency, call your local emergency number immediately.
Phoslo is primarily used to control hyperphosphatemia (elevated blood phosphate levels) in patients with end-stage renal disease (ESRD) who are on dialysis. It is specifically indicated for patients with chronic kidney disease who have difficulty maintaining normal phosphate levels through diet alone.
Phoslo contains calcium acetate as its active ingredient. It works by binding to dietary phosphate in the gastrointestinal tract, forming an insoluble calcium-phosphate complex that is then excreted in the stool. This prevents the absorption of excess phosphate into the bloodstream, thereby lowering serum phosphate levels.
Phoslo should be taken with meals for maximum effectiveness. Patients should monitor their calcium intake from all sources while taking this medication to avoid hypercalcemia. It may interact with other medications, so spacing doses apart from other oral drugs is recommended. Regular monitoring of serum calcium and phosphate levels is important during treatment. Patients with a history of hypercalcemia or low blood calcium levels should use caution and consult their healthcare provider.
Official drug label
WellAlly may earn a referral fee from linked resources at no extra cost to you. Editorial content is never influenced by commercial relationships.
This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed July 26, 2026. · Read our editorial policy