It is not known whether olaratumab passes into breast milk or if it could harm a nursing baby. You should not breast-feed while using this medicine. How is olaratumab given? Olaratumab is injected into a vein through an IV. A healthcare provider will give you this injection. Olaratumab is given in a 21-day treatment cycle. You may receive the medicine only during the first 2 weeks of each cycle, on Day 1 and Day 8 of the full cycle. The day before you receive olaratumab, you may be given other IV medications to prevent certain side effects. Olaratumab must be given slowly, and the IV infusion can take at least 60 minutes to complete. For the first 8 treatment cycles, you will also be treated with doxorubicin.