Side effectsMany women receiving breast cancer treatment have a few side effects that keep them from eating well. These side effects may be mild, and you may be able to control them with medications or complementary therapies. Talk to your doctors about your symptoms so they can be treated. If you continue to have problems eating, make sure your doctor.Herceptin causes in about 40% of the people who take it.These symptoms may include: fever chills muscle aches nausea Side effects generally become less severe after the first treatment.Your treatment team will monitor you during your infusions, especially your first dose, and can adjust the infusion if you are very uncomfortable.In the following pages of the Side Effects section, you can learn about: Since fatigue is almost always a side effect...