Sustanon is an oil based solution of 4 testosterone esters for IM injection including those of short, intermediate, and long half-lives. Serum testosterone will rapidly increase within 24 hours of IM administration and remain elevated for 7 – 10 days. Sustanon is suitable for the treatment of hypogonadism and other disorders related to androgen deficiency. Sustanon has both anabolic and androgenic effects.