Aromasin — Suicidal Aromatase Inhibitor for Estrogen Management
Exemestane (brand name Aromasin) is a steroidal, suicidal (irreversible) aromatase inhibitor. Unlike reversible AIs, Exemestane permanently deactivates the aromatase enzyme it binds to, meaning estrogen levels stay suppressed until the body produces new aromatase enzymes. It is the preferred AI for estrogen management during anabolic cycles.
Irreversibly binds to and destroys the aromatase enzyme (CYP19), preventing the conversion of testosterone and other androgens into estrogen. Because the binding is permanent ("suicidal"), there is no estrogen rebound when the drug is discontinued — the body must synthesize new aromatase enzymes to restore estrogen production.
| Parameter | Details |
|---|---|
| Starting Dose | 6.25 mg EOD (only if high E2 symptoms present) |
| Moderate Dose | 12.5 mg EOD |
| High Dose | 12.5 mg daily (heavy wet cycles only) |
| Route | Oral — take with fat for absorption |
| Onset | 24–48 hours |
Crashed Estrogen Warning
Crashed E2 is the #1 risk with Exemestane. Symptoms include: destroyed libido, depression, dry/cracking joints, extreme fatigue, and brain fog. Start LOW and only increase based on bloodwork. Estrogen is essential — the goal is management, not elimination.
Bloodwork Required
Never dose Exemestane based on "feel" alone. Sensitive E2 bloodwork (LC/MS) is required to confirm elevated estrogen before initiating and to monitor during use. Start low, titrate based on labs.
This guide is for educational and clinical-support purposes only. All dosing must be supervised by a licensed prescriber. Matrix Advanced Solutions does not provide medical advice. Always consult your healthcare provider before starting any peptide protocol.