150 MG Trastuzumab For Injection supplied under the tradename Hetraz is meant for I.V. infusion. The vial can be used multiple times. This prescription medicine has Trastuzumab as an active ingredient that is used in the treatment of different kinds of cancer, like breast and stomach. Oncologists can prescribe this medicine alone or along with other anticancer drugs based on the treatment and other factors. 150 MG Trastuzumab For Injection can cause certain side effects, like nausea, stomach upset, lack of sleep, weight loss, tingling and numbness of hands and feet, sore throat, mouth ulcers, etc.