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Anastrozole

Also known as: Arimidex

Well ResearchedHormone SupportProvider Rx Required

How It Works

Potent non-steroidal aromatase inhibitor that blocks conversion of testosterone to estradiol. Used in HRT protocols to manage estrogen levels in men on testosterone therapy.

What It's Used For

Estrogen managementHRT adjunctGynecomastia preventionTestosterone optimizationAromatase inhibition

Administration

Route: Oral

Typical Cycle: Concurrent with testosterone therapy

Safety & Side Effects

Possible Side Effects

⚠Joint pain
⚠Bone density loss (long-term)
⚠Fatigue
⚠Mood changes
⚠Over-suppression of estrogen

Contraindications

✘Severe osteoporosis
✘Premenopausal women (without proper protocol)
✘Liver disease

Research Summary

FDA-approved for breast cancer but widely used off-label in male HRT. Essential for estrogen management but requires careful monitoring — estrogen too low causes significant side effects.

References

Burnett-Bowie SA et al. J Clin Endocrinol Metab. 2009

Legal & Availability

Prescription required — FDA-approved for breast cancer

This peptide requires a prescription from a licensed provider.

Dosing Protocol

Standard: 0.25-0.5mg per dose

Frequency: 2-3x per week

Timing: With TRT injection schedule

Notes: Dose based on estradiol levels — over-suppression is common mistake

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Unlock Full Dosing Protocol

Specific dosing, frequency, timing, cycling schedules, and stacking guidance are available with a BioRoot AI Pro subscription.

Stacks Well With

Enclomiphene

Testosterone optimization, Male hypogonadism

Gonadorelin

Fertility preservation on TRT, Testicular function maintenance

Full stacking protocols and cycling schedules available with Pro subscription.

Is Anastrozole Right for You?

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This information is for educational purposes only and is not medical advice. Do not use any peptide without consulting a qualified healthcare provider. BioRoot AI is a clinical decision support tool — not a medical provider.