Testosterone Enanthate - from Hilma Biocare is an oil-based solution 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. Testosterone Enanthate 250 is suitable for the treatment of hypogonadism and other disorders related to androgen deficiency. Testosterone Enanthate 250 has both anabolic and androgenic effects. Testosterone supplementation has been demonstrated to increase strength and growth of new muscle tissue, frequently with increases in libido.