Activase: Full prescribing information from RxList.Alteplase, Recombinant - Healthtouch: Brief summary for patients.Cathflo Activase (Alteplase) - Genentech: Official pharmaceutical site intended for US health professionals for this medication used for restoration of function to central venous access devices.MedlinePlus: Thrombolytic Agents (Systemic): Features information about dosage, usage, warnings, and side effects.