Rtherax Injection is an antiparasitic medication. It is used in the treatment of malaria. It is not used to prevent malaria or to treat severe malaria (where it has affected the brain, lungs or kidneys). Rtherax Injection is administered as an injection by a healthcare professional. Kindly do not self administer. It is given in cases where oral administration is not possible. Some people may experience headaches, dizziness, muscle pain, and joint pain as side effects of this medicine. You may also notice some injection site reactions like pain, swelling, or redness. Please consult your doctor if these side effects persist for a longer duration. You may be monitored with blood tests once a week for 4 weeks to detect the presence of malarial parasites.