Question 1

What is Xphozah?

Accepted Answer

Xphozah is a phosphate absorption inhibitor that works locally within the gastrointestinal tract. It functions by blocking a specific transporter protein in the intestines, which limits the passage of phosphorus from the diet into the bloodstream.

By reducing the absorption of dietary phosphate, this medication helps to regulate phosphorus concentrations in the body. It represents a method of phosphate management that targets the intestinal pathways responsible for mineral transport.

Question 2

What is Xphozah used for?

Accepted Answer

Xphozah is used to treat hyperphosphatemia in chronic kidney disease on dialysis.

Question 3

How does Xphozah work?

Accepted Answer

Mechanism of Action

Xphozah contains the active ingredient tenapanor, which is a first-in-class sodium-hydrogen exchanger 3 (NHE3) inhibitor. Unlike traditional phosphate binders that attach to phosphorus in the gut to prevent absorption, Xphozah changes how the intestinal lining functions to block phosphorus from entering the body.

The medication works through the following process:

Targeting NHE3: The drug acts locally in the small intestine and colon to inhibit the NHE3 transporter.

Tightening Intestinal Junctions: By inhibiting this transporter, the medication causes a reaction that tightens the connections between the cells lining the intestines. These connections are known as the paracellular pathway.

Blocking Phosphate Flow: When these connections are tightened, it becomes much more difficult for phosphate molecules from food to pass through the intestinal wall and into the bloodstream.

Because Xphozah acts directly on the surface of the intestinal lining, very little of the medication is absorbed into the rest of the body. Its primary effect is to reduce the total amount of phosphorus that moves from the gut into the blood, helping to lower serum phosphorus levels in patients with kidney disease.

Question 4

What are the active ingredients in Xphozah?

Accepted Answer

The active ingredient in Xphozah is tenapanor .

Question 5

What are the side effects of Xphozah?

Accepted Answer

Common side effects of Xphozah may include:

diarrhea

abdominal pain

nausea

Always consult with a healthcare professional about potential side effects.

Question 6

What drug class is Xphozah?

Accepted Answer

Xphozah belongs to the vesicular monoamine transporter 2 (VMAT2) inhibitor drug class.

Question 7

What is the dosage of Xphozah and how do I take it?

Accepted Answer

How to Take Xphozah

Xphozah is taken by mouth as a tablet. It is typically prescribed to be taken twice a day. For the medication to work effectively, it should be taken immediately before your first meal of the day and immediately before your last meal of the day.

When taking this medication, follow these instructions:

Swallow the tablet whole.

Do not crush, chew, or break the tablet.

Keep the tablets in their original container to protect them from moisture.

Do not remove the desiccant (the small packet or canister used to keep the medicine dry) from the bottle.

Missed Dose

If you miss a dose of Xphozah, skip the missed dose and take your next dose at the regular time. Do not take two doses at the same time to make up for a missed dose.

Storage and Handling

Store the medication at room temperature and keep the bottle tightly closed. Because this medication is sensitive to moisture, it is important to keep it in the original container provided by the pharmacy.

Question 8

Is Xphozah safe during pregnancy and breastfeeding?

Accepted Answer

Pregnancy

There are no adequate studies on the use of Xphozah in pregnant women to inform a drug-associated risk of major birth defects or miscarriage. However, because the medication is minimally absorbed from the digestive tract into the bloodstream, exposure to the fetus is expected to be negligible. In animal reproduction studies, no adverse developmental effects were observed even at doses significantly higher than the recommended human dose.

If you are pregnant or planning to become pregnant, discuss the potential risks and benefits of this medication with your healthcare provider.

Breastfeeding

It is not known whether Xphozah passes into human breast milk. Because the drug stays primarily in the digestive tract and very little enters the mother's bloodstream, it is unlikely that a nursing infant would be exposed to the medication through breast milk or experience side effects. Decisions regarding breastfeeding while taking Xphozah should be made in consultation with a healthcare professional to weigh the benefits of breastfeeding against any potential risks.

Question 9

What forms and strengths does Xphozah come in?

Accepted Answer

Xphozah is supplied as a film-coated tablet for oral administration. The tablets are typically packaged in bottles that contain a desiccant canister to protect the medication from moisture.

It is important to keep the tablets in their original container and to leave the desiccant inside the bottle to ensure the medication remains effective.

Question 10

What is the FDA approval status of Xphozah?

Accepted Answer

FDA Approval and Indications

The U.S. Food and Drug Administration (FDA) approved Xphozah in October 2023. It is indicated for adults with chronic kidney disease (CKD) on dialysis as an add-on therapy when phosphate binders are insufficient or not tolerated. It belongs to a class of medications known as phosphate absorption inhibitors.

Boxed Warning

Xphozah carries a boxed warning regarding the risk of serious dehydration in pediatric patients. Due to the risk of severe diarrhea and life-threatening dehydration, the medication is strictly contraindicated in children under 6 years of age. The safety and effectiveness of Xphozah have not been established in patients younger than 18 years of age.

Contraindications

In addition to the age-based restriction, Xphozah is contraindicated in patients with known or suspected mechanical gastrointestinal obstruction.

Question 11

What should I know about Xphozah and cost?

Accepted Answer

Factors Affecting Cost

Several factors influence the out-of-pocket cost for Xphozah, including:

Insurance Coverage: Your specific health insurance plan, its formulary status for Xphozah, and your remaining deductible will determine your copay or coinsurance.

Pharmacy Selection: Prices may differ between retail pharmacies, specialty pharmacies, and mail-order services.

Manufacturer Assistance: The manufacturer may offer savings cards or patient assistance programs to help reduce costs for eligible patients.

Generic Availability

Xphozah is a brand-name medication containing the active ingredient tenapanor. Currently, there is no generic version available for the treatment of high phosphorus levels in adults with chronic kidney disease on dialysis. Brand-name medications typically cost more than their generic counterparts.

Financial Support Options

If you have difficulty affording your medication, you may want to discuss financial assistance options with your healthcare provider or pharmacist. They can often provide information on manufacturer-sponsored programs or third-party organizations that help cover the cost of prescription drugs.

Xphozah

Medication Quick Facts

📋Overview

What It's Used For

How It Works

Side Effects

Warnings & Precautions

Dosage & How to Take

Pregnancy & Breastfeeding

Forms & Strengths

FDA / Regulatory Status

Price Information

FAQ

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