
Ever since the first phase II study of paclitaxel (Taxol) began, there has been ongoing controversy about the optimal dose and schedule of administration of this drug. The initial reports of marked antitumor activity against metastatic breast cancer were obtained using 250 mg/m² administered by 24-hour continuous IV infusion. This schedule was originally developed in an attempt to reduce the incidence and severity of anaphylactic reactions. Subsequent to the determination that this dose and schedule was effective and safe, there were multiple attempts to develop more convenient schedules, and dose/schedules associated with an improved side-effect profile.

