|Systematic (IUPAC) name|
|Trade names||Renagel, Renvela|
|Pregnancy cat.||B3 (Australia), C (US)|
|Legal status||Schedule 4 (Australia), Rx only (US)|
where a+b:c = 9:1
|(what is this?)|
Sevelamer (rINN) (// or //) is a phosphate binding drug used to treat hyperphosphatemia in patients with chronic kidney disease. When taken with meals, it binds to dietary phosphate and prevents its absorption. Sevelamer was invented and developed by GelTex Pharmaceuticals. GelTex was acquired by Genzyme, and in April 2011 Sanofi-Aventis acquired Genzyme. The following month Sanofi-Aventis became simply Sanofi. Sevelamer is currently marketed by Sanofi under the trade names Renagel (sevelamer hydrochloride) and Renvela (sevelamer carbonate).
Chemistry and pharmacology
Sevelamer consists of polyallylamine that is crosslinked with epichlorohydrin. The marketed form sevelamer hydrochloride is a partial hydrochloride salt being present as approximately 40% amine hydrochloride and 60% sevelamer base. The amine groups of sevelamer become partially protonated in the intestine and interact with phosphate ions through ionic and hydrogen bonding.
Sevelamer therapy is contraindicated in hypophosphataemia or bowel obstruction.
Sevelamer can significantly reduce serum uric acid. This reduction has no known detrimental effect and several beneficial effects, including reducing hyperuricemia, uric acid nephrolithiasis, and gout.
- (1) Rosenbaum, D. P.; Mandeville, W. H.; Pitruzzello, M.; Goldberg, D. I. Nephrology Dialysis Transplantation Effect of RenaGel A , a Non-Absorbable , Cross-Linked , Polymeric Phosphate Binder , on Urinary Phosphorus Excretion in Rats. 1997, 961–964.
- Garg JP, Chasan-Taber S, Blair A, et al. (January 2005). "Effects of sevelamer and calcium-based phosphate binders on uric acid concentrations in patients undergoing hemodialysis: a randomized clinical trial". Arthritis and rheumatism 52 (1): 290–5. doi:10.1002/art.20781. PMID 15641045.