How long the side effects disappear after breast cancer chemotherapy depends on what the specific side effects are. If there are gastrointestinal reactions, such as nausea, vomiting, constipation, clinically, symptomatic treatment can be taken in time, with some antiemetic drugs, and some hormonal drugs can also be added. If constipation occurs, you can use cialis and some laxative drugs to reduce, may be these side effects will gradually disappear within a few days. If the side effect of hair loss occurs, the hair will grow back slowly after the whole chemotherapy is finished. Generally, the side effect of hair loss will not go away until after the chemotherapy is finished. Paclitaxel drugs may have toxic side effects on the peripheral nerves of the extremities. Numbness of the extremities, without pain, may last for a long time after chemotherapy and may not go away until the entire chemotherapy treatment is completed. Before chemotherapy, doctors will repeatedly tell patients that they need not worry about these side effects, and that they will be slowly relieved.