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Medications · Hormone optimization
Anastrozole
Aromatase inhibitor used adjunctively in hormone protocols.
What it does
What Anastrozole is and why doctors prescribe it.
Anastrozole is a non-steroidal aromatase inhibitor. In oncology it's an FDA-approved breast-cancer therapy. In compounded hormone optimization it's prescribed at much lower strengths as an adjunct in select male HRT protocols where the prescribing doctor identifies a need to manage estradiol conversion from testosterone.
How it works
Mechanism in plain English.
Anastrozole inhibits aromatase, the enzyme that converts androgens to estrogens. By reducing aromatization, it lowers circulating estradiol. In male HRT this is sometimes used to keep estradiol within physiologic range when supraphysiologic testosterone administration would otherwise drive estradiol up.
How long it's been studied
Research history.
Anastrozole was approved by the FDA in 1995 (Arimidex) for breast cancer. Off-label use in male HRT and fertility contexts is documented in the endocrinology literature. Compounded anastrozole at low-dose strengths is prepared under 503A for these off-label uses on doctor's prescription.
Dosing
Clinical context for the prescribing doctor.
Doctor-prescribed and closely lab-monitored. Compounded low-dose anastrozole in male HRT contexts is commonly prescribed in the 0.25–1 mg range, taken intermittently rather than daily. Your doctor monitors estradiol and testosterone labs and adjusts as needed. Over-suppression of estradiol carries its own risks; this medication is dosed conservatively.
This page is informational, not a dispensing aid. Anastrozole is dispensed only on a patient-specific prescription written by a licensed doctor for an identified patient. Compounded drugs are not FDA-approved and should not be evaluated using branded-drug trial data. Availability varies by state and prescribed medication.
How to access Anastrozole through RonanRx
Three paths.
Doctors can prescribe compounded Anastrozole for individual patients through RonanRx. Patients with a doctor can sign up to receive their prescription. Patients without a doctor can learn how the referral works.
Patient with a doctor
Sign up to receive your prescription.
If your doctor has already prescribed Anastrozole, sign up so we can prepare and ship your medication. The signup wizard collects intake and connects you to the prescribing workflow.
Patient without a doctor
Get referred by a partner clinic.
RonanRx prescribes through partner clinics — we don't initiate prescriptions on this site. Read how the referral process works and how to find a partner clinic in your state.
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