Levamisole: as adjuvant to cyclic chemotherapy in breast cancer.

The addition of levamisole, administered in adjunctive manner between the cycles of conventional high dose chemotherapy in patients with hormone resistant end state breast cancer substantially improved the survival of treated patients. Analysis of this double-blind study in 60 such patients suggests that improvement in remission status and survival is related to better tolerability of such cytotoxic therapy as regards both specific and nonspecific cytotoxicity. This improved tolerability enabled patients to receive higher doses of cytotoxic drugs over a shorter time period resulting in an improved remission rate and ultimate survival.