Adefovir dipivoxil (Hepsera) is an excellent example of a prodrug that can overcome the oral delivery problem associated with poor permeation across the intestinal mucosa. Since its launch in 2002, Hepsera has become an important agent for the treatment of hepatitis B patients with evidence of active viral replication. A safety profile similar to placebo has been observed for Hepsera, which allows it to be prescribed as an effective drug for chronic treatment of hepatitis B.


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Reza Oliyai, PhD, is the Director of Formulation and Process Development, Gilead Sciences. He is a co-inventor of Viread, Truvada, and the triple combination of Efavirenz/Emtricitabine/Tenofovir DF Dr Oliyai has also been involved with the development of Hepsera and Tamiflu. Dr Oliyai received his PhD from the University of Kansas in Pharmaceutical Chemistry and his BS in Pharmacy from Oregon State University.

Maria Fardis, PhD, has been at Gilead since 2001. Dr Fardis has been involved in multiple projects at Gilead ranging from immunology to antivirals. Prior to Gilead, Dr Fardis was at Intrabiotics Pharmaceuticals where she was involved in antibacterial programs. Dr Fardis received her PhD from University of California, Berkeley and her BS degree in Chemistry at the University of Illinois, Urbana-Champaign.


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