Why Phosphorus Matters in Kidney Disease
If you’re living with chronic kidney disease (CKD) or on dialysis, you’ve probably heard your care team talk about phosphorus. This mineral is essential for bone health, but when your kidneys aren’t working properly, phosphorus builds up in your blood—and that can cause serious health problems.
That’s where phosphorus binders come in.
What Are Phosphorus Binders?
Phosphorus binders are medications that help control the amount of phosphorus your body absorbs from food. They work by “binding” to phosphorus in your stomach, so it’s carried out of your body through stool instead of entering your bloodstream.
Why Dialysis Isn’t Enough
Dialysis helps remove extra phosphorus from your blood, but not all of it.
Since phosphorus is in many foods; especially dairy, beans, meats, and processed items; your levels can still rise even if you’re doing dialysis regularly.
Without binders, too much phosphorus can lead to:
- Weak or brittle bones
- Itching and joint pain
- Calcium deposits in blood vessels or organs
- Heart disease
Types of Phosphorus Binders
Your care team will choose the right one based on your lab work, calcium levels, and other health needs.
There are several types of binders your doctor may prescribe:
- Calcium-based binders (like calcium acetate or calcium carbonate)
- Non-calcium binders (like sevelamer or lanthanum carbonate)
- Iron-based binders (like sucroferric oxyhydroxide)
How to Take Phosphorus Binders Properly
- Timing is everything: Take binders with meals or snacks that contain phosphorus.
- Be consistent: Skipping doses may lead to dangerous phosphorus buildup.
- Keep in touch: Let your care team know if you have side effects like constipation or upset stomach.
Tips to Help You Remember
- Set a phone reminder when it’s time to eat.
- Keep your binders in a pill organizer.
- Ask your dietitian for a list of high-phosphorus foods to watch for.
Final Thoughts
Phosphorus binders are a key part of your dialysis care plan. When used correctly, they help protect your bones, blood vessels, and heart so you can stay healthy and feel better.
Always follow your care team’s advice, and don’t hesitate to ask questions about your medication.