Generic Name: sevelamer (se VEL a mer)Brand Names: Renagel, Renvela
Sevelamer is a phosphate binder. Sevelamer helps prevent hypocalcemia (low levels of calcium in the body) caused by elevated phosphorus.
Sevelamer is used to reduce blood levels of phosphorus in people with chronic kidney disease who are on dialysis.
Sevelamer may also be used for other purposes not listed in this medication guide.
Before taking sevelamer, tell your doctor if you have trouble swallowing, severe constipation, a digestive disorder of your stomach or intestines, or if you have recently had stomach or intestinal surgery.
Avoid taking any other medicines within 1 hour before or 3 hours after you take sevelamer. Sevelamer can bind to other medications and make them less effective.
Before taking sevelamer, tell your doctor if you are taking ciprofloxacin (Cipro), a heart rhythm medication, or a seizure medication.Do not take calcium or other mineral supplements without your doctor's advice. Use only the specific type of calcium or mineral supplement your doctor recommends.
a low blood level of phosphorus (hypophosphatemia); or
a blockage in your intestines.
If you have any of these other conditions, you may need a dose adjustment or special tests to safely use this medication:
a digestive disorder of your stomach or intestines; or
if you have recently had stomach or intestinal surgery.
Take this medication exactly as prescribed by your doctor. Do not take it in larger amounts or for longer than recommended. Follow the directions on your prescription label.Take sevelamer with meals. Do not crush, chew, or break the sevelamer tablet. Swallow the pill whole. Sevelamer tablets expand when they are wet, and breaking or crushing the pill may make it harder to swallow.
Sevelamer powder must be dissolved in water before you take it. The 0.8-gram packet should be mixed with at least 1 ounce (2 tablespoons) of water. The 2.4-gram packet should be mixed with at least 2 ounces (4 tablespoons) of water.
Stir the powder in water until it is completely dissolved. Drink all of this mixture right away. To make sure you get the entire dose, add a little more water to the same glass, swirl gently and drink right away.
To be sure this medication is helping your condition and not causing harmful effects, your blood may need to be tested on a regular basis. Do not miss any scheduled appointments.
Sevelamer may be only part of a complete program of treatment that also includes a special diet. It is very important to follow the diet plan created for you by your doctor or nutrition counselor. You should become very familiar with the list of foods you must eat or avoid to help control your condition.Store sevelamer tablets at room temperature away from moisture and heat.
See also: Sevelamer dosage in more detail
Take the missed dose as soon as you remember. If it is almost time for your next dose, wait until then to take the medicine and skip the missed dose. Do not take extra medicine to make up the missed dose.
Since sevelamer is not absorbed by the body, an overdose of this medication is not likely to cause life-threatening symptoms.
Avoid taking any other medicines within 1 hour before or 3 hours after you take sevelamer. Sevelamer can bind to other medications and make them less effective.Do not take calcium or other mineral supplements without your doctor's advice. Use only the specific type of calcium or mineral supplement your doctor recommends.
severe stomach pain or constipation; or
fever, chills, body aches, flu symptoms.
Less serious side effects may include:
stomach pain, gas;
This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
Usual Adult Dose for Hyperphosphatemia of Renal Failure:
Initial:Patients not taking a phosphate binder:800 mg to 1600 mg orally three times daily with each meal based on serum phosphorus level:Phosphorus greater than 5.5 and less than 7.5 mg/dL = 800 mgPhosphorus greater than or equal to 7.5 and less than 9.0 mg/dL = 1600 mgPhosphorus greater than or equal to 9.0 mg/dL = 1600 mgPatients switching from calcium acetate to sevelamer: For each calcium acetate 667 mg tablet used per meal, give sevelamer 800 mg per meal.Patients switching from sevelamer hydrochloride to carbonate:Dosage should be prescribed on a gram per gram basis.Maximum daily dose studied for sevelamer hydrochloride is 13,000 mg and for carbonate is 14,000 mg.
The following drugs can interact with sevelamer. Tell your doctor if you are taking any of these:
levothyroxine (Synthroid, Levothroid, Levoxyl);
a heart rhythm medication; or
a seizure medication.
This list is not complete and there may be other drugs that can interact with sevelamer. Tell your doctor about all your prescription and over-the-counter medications, vitamins, minerals, herbal products, and drugs prescribed by other doctors. Do not start a new medication without telling your doctor.