Patients and Families

Renagel is a phosphate binder. Along with diet and dialysis, Renagel helps control phosphorus levels in the blood. This site provides information about controlling phosphorus and about Renagel.

• 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.