Stanozolol injection has a few legitimate therapeutic indications when prescribed and monitored by a healthcare professional. 

• Hereditary Angioedema (HAE): It is primarily used to decrease the frequency and severity of attacks of HAE, a condition that causes episodes of severe swelling of the face, extremities, genitals, bowel wall, and throat.

• Anemia and Muscle Wasting: It may be used as an adjunct therapy in managing muscle wasting diseases (like those associated with cancer or HIV/AIDS) or to promote weight gain and stimulate red blood cell production after severe illness or trauma.

• Veterinary Medicine: It is also used in animals, particularly horses, to improve muscling, stimulate appetite, and aid in recovery from wasting conditions, though its use in cats is associated with liver toxicity.