Chemotherapy can cause harmful side effects but certain tips may help reduce them and improve survival rates. These include requesting a chemosensitivity test to select the most effective drugs, preventing cancer cachexia through supplements like melatonin and cannabis, and improving chemotherapy efficacy with berberine, curcumin, and whole body hyperthermia. Restoring the immune system after chemotherapy is also important, with arginine, omega-3 fatty acids, and humor/laughter found to boost immunity.