Sevelamer is a medication commonly used to treat high levels of phosphorus in the blood of patients with chronic kidney disease. While sevelamer is the brand name of this medication, there are several other synonyms that may be used to refer to it. Some common synonyms for sevelamer include Renvela, Renagel, poly(allylamine hydrochloride-co-N,N'-dimethylacrylamide) hydrochloride, and poly(allylamine hydrochloride-co-N,N'-diallyltartardiamide) chloride. Regardless of the synonym used, the medication works by binding to phosphorus in the gastrointestinal tract, preventing it from being absorbed into the bloodstream. This helps to control phosphorus levels and maintain the overall health of patients with chronic kidney disease.