Zinc is used for treatment and prevention of zinc deficiency. It is also used orally for treating the common cold, recurrent ear infections, asthma, swine flu, and preventing acute lower respiratory infections. Other oral uses include macular degeneration, night blindness, cataracts, diabetes, hypertension, acquired immunodeficiency syndrome (AIDS), psoriasis, eczema, and acne. It is also used orally for anorexia nervosa, acute diarrhea in children with zinc deficiency, attention deficit-hyperactivity disorder (ADHD), blunted sense of taste (hypogeusia), aphthous ulcers, Crohn’s disease, ulcerative colitis, and peptic ulcers. Other oral uses include benign prostatic hyperplasia (BPH), male infertility, male impotence, osteoporosis, rheumatoid arthritis, and muscle cramps in patients with cirrhosis. It is also used orally for sickle cell disease, thalassemia, Alzheimer’s disease, Down syndrome, Wilson’s disease, Hansen’s disease, acrodermatitis enteropathica, necrolytic acral erythema, prevention of esophageal cancer, and delayed wound healing associated with zinc deficiency. Zinc is also used orally for improving athletic performance and strength, improving immune function, improving growth and health in zinc-deficient stunted children, tinnitus, and severe head injuries. It is also used orally and locally for parasitic infections, including prevention and treatment of malaria.