Armigen is an injectable anti-estrogen medication containing Anastrozole, commonly used to prevent estrogenic side effects during anabolic steroid cycles. By inhibiting the aromatase enzyme, Armigen effectively lowers estrogen levels in the body, reducing the risk of gynecomastia and water retention. Armigen is often used in conjunction with steroids like testosterone or Dianabol to maintain a balanced hormonal environment. Armigen is a crucial part of post-cycle therapy (PCT) to help restore natural hormone production and maintain muscle gains after a steroid cycle.