- Opportunistic infection requiring either acute treatment or maintenance therapy with azithromycin, erythromycin or other macrolides, sulfonamides, amphotericin, dapsone, ganciclovir, antifolates, and other investigational agents except erythropoietin. For first 6 weeks of treatment, patients may not receive treatment with erythromycin (or other macrolides), sulfonamides, immunomodulators with the exception of alpha interferon, lymphocyte replacement, cytotoxic chemotherapy, dapsone, ganciclovir, rifampicin, coumadin, antiretrovirals, and investigational agents other than erythropoietin.