where buy cytotec without rx Reactions include neutropenia, which resolves after penicillin therapy is discontinued; Coombs positive hemolytic anemia, an uncommon reaction, occurs in patients treated with intravenous penicillin G in doses greater than 10 million units day and who have previously received large doses of the drug; and with large doses of penicillin, a bleeding diathesis can occur secondary to platelet dysfunction