What is ANAVAR? How to Use It? Anavar has an active ingredient Oxandrolone. These active steroids online are used to help people regain weight that they have lost due to certain medical conditions. Weight loss due to surgery, chronic infection, trauma, and others. It also relieves bone pain due to bone loss and is also used for osteoporosis treatment. However, oxandrolone is a different type of steroids due to its mild anabolic effects with low androgenic activity. People also use this as a growth stimulant for children. Women used this even at low doses, except for those who are building muscle mass.