- Following recovery from consolidation therapy patients receive 2 sequences of maintenance therapy with sequence one consisting of vincristine IV on days 1 and 8, oral prednisone 2-3 times daily on days 1-8, doxorubicin IV on day 15, oral mercaptopurine 2-3 times daily on days 36-64, oral methotrexate on days 39, 46, 53, and 60, dactinomycin IV on day 85, and methotrexate intrathecally on days 36 and 43.