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Manufactured by Fresenius Medical Care

*You can pay as little as $0 per fill using Drug Coupons or Patient Assistance Programs. Subject to applicability & eligibility requirements.

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PHOSLO cost saving options available to you

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Jamie Winn NowPatientGreen tick
Updated on 26 Apr 2024

PHOSLO Uses, Side Effects, Interactions, Warnings & Dosing

What is PHOSLO?

What is PHOSLO?

PHOSLO is the brand name for calcium acetate and is available as a oral gelcap and tablet.

What dosages is PHOSLO available in?

What dosages is PHOSLO available in?

PHOSLO is available as a 667 mg or gelcap and tablet.

What is PHOSLO used for?

What is PHOSLO used for?

PHOSLO is a phosphate binder and is used to treat high blood phosphate levels in people with end-stage chronic kidney disease (CKD).

How does PHOSLO work?

How does PHOSLO work?

PHOSLO is a phosphate binder. It attaches to the phosphate in your food before the phosphate can be absorbed by your body. Your body then gets rid of this extra phosphate through your stool. This helps lower your blood phosphate levels to protect your kidneys and bones.

How do I take PHOSLO?

How do I take PHOSLO?

PHOSLO is typically started at 1,334 mg (2 pills) by mouth with every meal. Each pill contains 667 mg of calcium acetate. Your provider will adjust your dose based on the phosphate levels in your blood.

Is it safe for me to take PHOSLO?

Is it safe for me to take PHOSLO?

PHOSLO is a safe and effective treatment when used for FDA licensed indications. However, like all medications, they may give you unwanted side effects. You should always discuss potential side effects with your physician to ensure the medication is suitable and right for you. You should not use this medication if you have hypercalcemia.

PHOSLO Common Side Effects

PHOSLO Common Side Effects

Common side effects of PHOSLO:

  • High calcium levels in the blood
  • Nausea
  • Vomiting
PHOSLO Serious Side Effects

PHOSLO Serious Side Effects

Serious side effects are rare with PHOSLO. Contact your healthcare provider immediately if you experience any of the following.

  • Very high calcium levels: tiredness, muscle weakness, loss of appetite, nausea or vomiting, constipation, bone pain, confusion, delirium
Effects of other drugs, drug classes and over-the-counter products on PHOSLO

Effects of other drugs, drug classes and over-the-counter products on PHOSLO

The following medications may interact with PHOSLO:

  • May decrease the bioavailability of tetracyclines or fluoroquinolones. When clinically significant drug interactions are expected, administer the drug at least one hour before or at least three hours after PHOSLO or consider monitoring blood levels of the drug
Who makes PHOSLO?

Who makes PHOSLO?

Fresenius Medical Care

Is PHOSLO safe in pregnancy?

Is PHOSLO safe in pregnancy?

It is not known if PHOSLO will harm your unborn baby. You should talk to your healthcare provider before taking this medication if you are pregnant.


What to do if you missed your PHOSLO dose

The FDA's medical product safety reporting program for health professionals, patients and consumers.

Learn more about reporting side effects
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Medical Disclaimer

NowPatient has taken all reasonable steps to ensure that all material is factually accurate, complete, and current. However, the knowledge and experience of a qualified healthcare professional should always be sought after instead of using the information on this page. Before taking any drug, you should always speak to your doctor or another qualified healthcare provider.

The information provided here about medications is subject to change and is not meant to include all uses, precautions, warnings, directions, drug interactions, allergic reactions, or negative effects. The absence of warnings or other information for a particular medication does not imply that the medication or medication combination is appropriate for all patients or for all possible purposes.

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