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Calcium Acetate (Phos Binder) Capsule — prescription drug image

Calcium Acetate (Phos Binder)

Calcium Acetate (Phos Binder) 667MG

Prescriptions & Refills
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What is Calcium Acetate (Phos Binder)?

Calcium Acetate is a mineral and electrolyte drug used to lower high levels of phosphate in the blood. Calcium Acetate is a generic drug. On average, Calcium Acetate costs about $29 for a supply of 90, 667 mg capsules. You can use our Rx.com Calcium Acetate savings card to save on the retail price at participating pharmacies near you.

Prescription savings · · · ·

What is Calcium Acetate (Phos Binder) ?

Calcium Acetate is a mineral and electrolyte drug used to lower high levels of phosphate in the blood. Calcium Acetate is a generic drug. On average, Calcium Acetate costs about $29 for a supply of 90, 667 mg capsules. You can use our Rx.com Calcium Acetate savings card to save on the retail price at participating pharmacies near you.
  • Allergic reaction: Itching or hives, swelling in your face or hands, swelling or tingling in your mouth or throat, chest tightness, trouble breathing
  • Constipation, loss of appetite, nausea, vomiting
  • Confusion
  • This medicine can cause hypercalcemia (too much calcium in your blood). Do not take other calcium supplements or eat foods that have large amounts of calcium (such as milk, cheese, and yogurt) while you are taking this medicine.
  • Your doctor will check your progress and the effects of this medicine at regular visits. Keep all appointments.
  • Tell your doctor if you are pregnant or breastfeeding.
  • Keep all medicine out of the reach of children. Never share your medicine with anyone.
What is calcium acetate used for?
Calcium acetate is FDA-approved to reduce serum phosphorus, meaning to control high phosphorus levels (hyperphosphatemia), in patients with end stage renal disease, typically people on dialysis. It is taken with each meal. It is not intended for use as a general calcium supplement.
How does calcium acetate lower phosphorus levels?
It is a phosphate binder. When taken with a meal, calcium acetate binds the phosphate in that food inside your gut and forms insoluble calcium phosphate, which your body cannot absorb. That bound phosphate passes out in the stool instead of entering the bloodstream, so serum phosphorus goes down.
Should calcium acetate be taken with food?
Yes. Calcium acetate should only be taken with meals. It works by binding the phosphate in the food you are eating, so taking it apart from a meal means there is little dietary phosphate for it to bind and it will not do its job. Follow your doctor's directions on how much to take with each meal.
What are the side effects of calcium acetate?
Common side effects include nausea, vomiting, constipation, decreased appetite, and itching. The main risk is high blood calcium (hypercalcemia), which may cause no symptoms at all, or may cause nausea, vomiting, constipation, loss of appetite, weakness, confusion, disorientation, fainting, or loss of consciousness. Get emergency care for confusion, fainting, or loss of consciousness. Your doctor will monitor your calcium levels with blood tests.
Is calcium acetate the same as a calcium supplement?
No. Even though it contains calcium, calcium acetate is not indicated or intended for use as a general calcium supplement. It is prescribed to bind phosphate from food in patients with end stage renal disease. Using it as a calcium supplement is outside its approved use. You also should not take other calcium supplements or calcium-containing antacids along with it unless your doctor tells you to, because that raises your risk of high blood calcium.
How much does Calcium Acetate (Phos Binder) cost without insurance?
The price of Calcium Acetate (Phos Binder) without insurance varies by pharmacy, dosage, and quantity. Rx.com compares cash prices at more than 60,000 US pharmacies so you can find the lowest price near you.
What are the common side effects of Calcium Acetate (Phos Binder)?
Common side effects of Calcium Acetate (Phos Binder) may include: Allergic reaction: Itching or hives, swelling in your face or hands, swelling or tingling in your mouth or throat, chest tightness, trouble breathing, Constipation, loss of appetite, nausea, vomiting, Confusion. This is not a complete list — consult your pharmacist or doctor for full side effect information.
Is there a generic version of Calcium Acetate (Phos Binder)?
Generic versions may be available for Calcium Acetate (Phos Binder). Generics contain the same active ingredients as brand-name drugs and are typically 80–90% cheaper. Search Calcium Acetate (Phos Binder) on Rx.com to compare generic and brand prices at pharmacies near you.
What is the cheapest pharmacy for Calcium Acetate (Phos Binder)?
The cheapest pharmacy for Calcium Acetate (Phos Binder) depends on your location and dosage. Rx.com compares prices at CVS, Walgreens, Walmart, Kroger, Costco, and thousands of independent pharmacies. Enter your ZIP code on Rx.com to find the lowest price for Calcium Acetate (Phos Binder) near you.

Calcium Acetate (Phos Binder) Coupons & Prices

Calcium Acetate (Phos Binder) 667MG

Prescriptions & Refills
Licensed US providers · Online visit in minutes
Calcium Acetate (Phos Binder) Capsule — prescription drug image
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Looking for a calcium acetate phosphate binder coupon? Calcium acetate is the generic form of PhosLo, a calcium-based phosphate binder taken with meals to lower serum phosphorus in people with end stage renal disease, usually those on dialysis. It is available as an FDA-approved generic, but the cash price you pay can vary a lot from one pharmacy to the next, even within the same town. Rx.com compares prices across more than 60,000 pharmacies so you can see what your prescription actually costs nearby. Enter your ZIP above to see today's price and print or text yourself a free coupon.

What is calcium acetate and how does it work?

Calcium acetate is a calcium-based phosphate binder. It is FDA-approved to reduce serum phosphorus (control hyperphosphatemia) in patients with end stage renal disease, typically people on dialysis. Healthy kidneys clear extra phosphorus from the blood; when they no longer can, phosphorus from food builds up. Calcium acetate is taken with each meal, where it binds the phosphate in that food inside the gut to form insoluble calcium phosphate, which then leaves the body in the stool instead of entering the bloodstream.

Because it works by grabbing phosphate from food as it passes through, it only does its job when taken with meals. Brand names have included PhosLo and PhosLo Gelcaps, along with Eliphos and Calphron; the Phoslyra oral solution has been discontinued. Calcium acetate is not intended for use as a general calcium supplement. It is sometimes used in chronic kidney disease patients not yet on dialysis or as a calcium source in low blood calcium, but those uses are off-label and outside the approved indication, and are decisions only your kidney doctor should make.

How much does calcium acetate cost without insurance?

Calcium acetate is available as an FDA-approved generic, which usually means more competition and more pricing options than a brand-only drug. There is no manufacturer savings card for it. But generic does not automatically mean cheap at every counter: cash prices for the same strength and quantity can differ widely between a chain drugstore, a grocery pharmacy, and an independent down the street, and phosphate binders are taken with every meal, so the monthly quantity adds up.

That spread is exactly why comparing matters. Rx.com checks prices at more than 60,000 pharmacies and shows you what each one charges today with our free discount coupon, so you are not guessing. Enter your ZIP above to see today's price near you. If you have Medicare Part D or other prescription coverage, it is worth checking your plan's price too, and simply using whichever is lower. We will always tell you when another route is the better deal.

Calcium acetate vs. other phosphate binders

Calcium acetate is one of several phosphate binders, and they are grouped by what does the binding. Calcium-based binders include calcium acetate itself, sold under brands such as PhosLo. Non-calcium binders are often chosen when calcium load is a concern, since they do not add calcium to the body.

Which binder is right depends on your calcium and phosphorus lab values, your pill burden, and how your stomach tolerates it, so this is a conversation for your nephrologist rather than something to switch on your own. If your prescriber does change you to a different binder, prices vary between them and between pharmacies, so it is worth running a fresh comparison on the new prescription.

Safety and side effects to know

Calcium acetate has no boxed warning. It should not be used by anyone who already has high blood calcium (hypercalcemia), and hypercalcemia is the main risk of treatment. It can be silent, or it can show up as nausea, vomiting, constipation, loss of appetite, weakness, confusion, disorientation, fainting, or loss of consciousness. Confusion, fainting, or loss of consciousness are reasons to seek emergency care. Your doctor will typically check serum calcium twice weekly while your dose is being adjusted and regularly after that, and will lower or stop the dose if calcium runs high. Over the long term, chronically high calcium can contribute to calcification in blood vessels and soft tissue. Common side effects are nausea, vomiting, constipation, decreased appetite, and itching.

Do not add other calcium supplements, calcium-containing antacids, or vitamin D analogs unless your doctor directs it, since these stack on top of the calcium you are already taking. Calcium acetate also binds other medicines in the gut: fluoroquinolone antibiotics, tetracyclines, and levothyroxine should be separated from it by several hours, typically two to six depending on the drug, so tell your pharmacist about everything you take. And remember it only works when taken with meals. This is general information, not medical advice; follow the directions from your kidney doctor and pharmacist.

Sources & accuracy

This Calcium Acetate (Phos Binder) information was written and reviewed against authoritative U.S. medical sources — MedlinePlus (U.S. National Library of Medicine), DailyMed, and FDA prescribing information — and checked for accuracy. It is provided for education and is not a substitute for professional medical advice.

Verify the official label: Calcium Acetate (Phos Binder) on DailyMed (FDA)

Reviewed against FDA labeling · Last reviewed July 2026

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