Hars K 10mg Injection is used in the treatment of nutritional deficiencies. It is a form of vitamin K that provides essential nutrients. It helps in improving the conditions which are caused due to deficient levels of vitamin K in the body. Hars K 10mg Injection is given by a doctor or a nurse. Do not self-administer this medicine at home. The dose and duration of the treatment will depend on the severity of your condition and how much you need it. Take it for as long as your doctor has prescribed to get the maximum benefit from the medicine. The common side effects of this medicine include injection site reactions such as pain, swelling, and redness. These are usually temporary and resolve with time. Before you get the injection, let your doctor know if you are pregnant as it may cause harmful effects to the developing baby. Let your doctor also know if you have any preexisting medical conditions and all the other medicines you are taking.