Anastrozole is used as an aromatase inhibitor during anabolic steroid cycles to prevent estrogen-related side effects including gynecomastia, water retention, and elevated blood pressure. By blocking the aromatase enzyme it reduces total circulating estradiol, providing systemic estrogen control rather than just receptor-level blocking as SERMs do.

Arimidex is the original brand name manufactured by AstraZeneca. Anastrozole is the international non-proprietary name for the same active molecule. All generics available at U Store contain 1mg of Anastrozole per tablet and are pharmacologically identical to branded Arimidex.

Some PCT protocols include Anastrozole in the early weeks to manage an estrogen rebound following the end of a cycle. However, many experienced users prefer Exemestane (Aromasin) for PCT as its steroidal structure offers a more favorable IGF-1 and cholesterol profile during recovery. The right choice depends on individual bloodwork and the compounds used in the preceding cycle.

Research indicates that Tamoxifen (Nolvadex) can reduce plasma Anastrozole levels by approximately 27%. If combining an AI with a SERM during PCT, Exemestane is generally the preferred aromatase inhibitor to pair with Nolvadex. On cycle, Anastrozole alone is typically sufficient without adding a SERM.

Suppressing estradiol too aggressively causes a range of negative effects including joint pain and dryness, significantly reduced libido, erectile dysfunction, poor mood and depression, fatigue, and negative changes to lipid markers. This is why bloodwork-guided dosing is essential — Anastrozole should control estrogen, not eliminate it.

No. Anastrozole is an oral compound but does not carry the hepatotoxicity associated with alkylated oral anabolic steroids. It is well tolerated at standard doses and does not require liver support supplementation during use.