Patients should tell their doctor about any side effect that bothers them or that does not go away. These are not all of the possible side effects with Rituxan.Report side effects to the FDA at (800) FDA-1088 or http://www.fda.gov/medwatch . Patients and caregivers may also report side effects to Genentech at (888) 835-2555. Patients should read the Rituxan Full Prescribing Information including Boxed WARNINGS, and the Medication Guide at http://www.rituxan.com. About Genentech Founded more than 30 years ago, Genentech is a leading biotechnology company that discovers, develops, manufactures and commercializes medicines to treat patients with serious or life threatening medical conditions. The company, a member of the Roche Group, has headquarters in South San Francisco, California. For additional information about the company, please visit http://www.gene.com.