Arimidex (Anastrozole) is one of the most reliable antiestrogens on the market today and is used during steroid cycle to control normal estrogen rate and prevent gynecomastia symptoms.

• Usage: 0.5-1 mg/day

Tamoxifen can be used as anti-estrogen during steroid cycle to prevent negative effects of high estrogen rate, including gynecomastia, but primarily it is used to stimulate and restore natural Testosterone levels post cycle. (Do not use Nolvadex after Trenbolone, Nandrolone, Oxymetholone cycles. Clomid only.) 

• Usage: 10-40 mg/day

Novo-pharm Clomiphene Citrate blocks estrogen receptors at the cellular level and doesn’t suppress body’s own estrogen production. 

• It also helps restore natural testosterone production.
• Use for PCT after Nandrolone and Trenbolone cycles
• Helps to maintain muscle gains after the cycle.
• PCT duration with Clomid 4-6 weeks at 50-100mg/day

Letrozole is one of the most commonly used anti-estrogen during cycle among steroid users. Femara reverses the symptoms of gynecomastia and other estrogen related side effects.

• Usage: 0.5-2.5 mg/day

Aromasin protects against estrogen-related side effects. It is mild Aromatase Inhibitor used to prevent gyno during highly androgenic steroid cycles.

• Usage: 12.5-25 mg/day