R-VAC Vaccine is a medicine used in the prevention of rubella. Rubella is a highly contagious disease that is caused by a virus. This vaccine is given to children to prevent them from the disease. R-VAC Vaccine is administered by a healthcare professional and should not be self-administered. It protects the child from diseases that can be caused by rubella virus. Like with any other injectable vaccine, there could be mild pain and redness at the injection site, low-grade fever, rash, and upper respiratory tract infection. These are usually temporary and resolve with time. However, if these side effects do not go away with time or get worse, let the doctor know. The doctor may help with ways to reduce or prevent these symptoms. To make sure the vaccine is safe for the child, before receiving the vaccine, it is important to let the doctor know if he/she has any other illnesses. You should also tell the doctor of all the medicines the child is taking.