The lack of alternative treatments for herpes simplex virus infection in patients with AIDS and the development of resistance to acyclovir for patients requiring repeated treatment presents a therapeutic dilemma for physicians. SP-303T has good in vitro activity against resistant strains and offers a convenient and inexpensive means of drug administration in comparison to the use of intravenous medication.
Patients receive 14 days (and up to 42 days) of treatment with topically applied SP-303T. SP-303T is applied directly onto herpes simplex virus lesions three times daily in a quantity sufficient to thinly cover the entire lesion, which may then be covered with an appropriate dressing, if needed. At the end of the treatment period, patients enter a follow-up period of 2 weeks.