About Hyperphosphatemia in Chronic Kidney Disease

Healthy kidneys clean the blood by removing excess fluid, minerals and waste. When the kidneys do not work properly, they can no longer remove all of the waste and maintain the fluid and chemical balance in the body. Minerals like phosphorus can build up. Too much phosphorus in the body is called hyperphosphatemia. Dialysis and a low phosphorus diet are necessary to help reduce excess phosphorus and other waste in the body. Typically, however, dialysis and diet alone cannot remove all of the waste.

• Do not use Renagel if you have very low phosphorus levels or a history of bowel obstruction.
• Talk to your doctor if you have had digestive tract surgery, or other digestive disorders including severe constipation.
• The most common side effects with Renagel include vomiting, nausea, diarrhea, upset stomach, abdominal pain, constipation, and rash.
• In uncommon instances, patients have experienced bowel obstruction.
• Take Renagel with meals and adhere to your prescribed diet.
• Speak to your doctor when taking Renagel with other medications.
• Promptly contact your doctor if you experience severe abdominal pain, new or worsening constipation, or other severe intestinal symptoms while on Renagel.