Sodium carboxymethylcellulose

Sodium carboxymethylcellulose is an organic compound related to cellulose. It is used in oral formulations and food products to increase thickness and improve consistency 1. It is poorly absorbed and its safe use by humans has been well established 2. Sodium carboxymethylcellulose is an approved food additive by the U.S. Food and Drug Administration (FDA) 3.

This ingredient can be found in the following products in United States:


  1. Handbook of Pharmaceutical Excipients. Washington, DC: Pharmaceutical Press and American Pharmacists Assn, 2006.
  2. Bar, A., Til, H.P., Timonen, M. Subchronic oral toxicity study with regular and enzymatically depolymerized sodium carboxymethylcellulose in rats. Food Chem Toxicol 1995; 33(11): 909-17.
  3. Food and Drug Administration. EAFUS: A Food Additive Database. 10-17-2008. 12-4-2008.