The U.S. Food and Drug Administration today warned several manufacturers and distributors of unapproved drugs containing steroids that continued distribution and sale of these products without FDA approval could result in regulatory action including seizure and injunction. FDA is concerned that the use of these products, which are marketed as dietary supplements and promoted for building muscle and increasing strength, may cause serious long-term adverse health consequences in men, women, and children. These products claim to be anabolic and problems associated with anabolic steroids include: liver toxicity, testicular atrophy and male infertility, masculinization of women, breast enlargement in males, short stature in children, adverse effects on blood lipid levels, and a potential to increase the risk of heart attack and stroke.