Anastrozole Add-On
Tablet · 0.25 mg
- Controls estrogen on TRT
- Reduces common side effects
- Low-dose oral tablet
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What is Anastrozole?
An aromatase inhibitor used sparingly during hormone optimization when lab-confirmed high estradiol causes side effects. Only prescribed if your bloodwork calls for it, and always at the lowest effective dose to protect bone health and lipids.
What to expect
- Prescribed on evidence — This is added when labs and symptoms both point to high estrogen, not by default.
- A deliberately low dose — The aim is bringing estrogen into range, not eliminating it.
- Labs guide the dose — Estradiol is rechecked alongside testosterone at follow-up.
- Tell us how you feel — Joint aches or flat mood can signal the dose is too high — report them.
How it works
Online consultation
Answer a few health questions — a licensed provider reviews online. No waiting rooms.
Prescription approved
Once approved, your medication ships discreetly to your door.
Feel the difference
Physician-guided support and check-ins keep results on track.
Dosing, safety & what's inside
Take 1 tablet by mouth twice weekly only if estradiol elevated on labs during TRT/SERM therapy; adjust per follow-up labs
Anastrozole is FDA approved to treat breast cancer in postmenopausal women. Using it as a hormone add-on is off-label, which means the FDA has not reviewed it for this use. The side effect rates below come from breast cancer trials, so they may not describe what happens at the much lower doses used here.
Tell your care team straight away if you get chest pain or pressure, shortness of breath, a new bone fracture or sudden bone pain, severe joint pain that limits movement, or hives or swelling of your face, lips or throat.
Common side effects
- hot flashes
- weakness
- joint inflammation
- general pain
- joint pain
- sore throat
- raised blood pressure
- low mood
- nausea
Rare but serious
- more heart events in people who already have heart disease
- loss of bone mineral density in the spine and hip
- fractures
- raised cholesterol
- severe allergic reactions
Do not take this if you have reacted badly to anastrozole before, or you are or may become pregnant.
This is not a complete list of side effects. Message your care team about any symptom that worries you.
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Common questions
What does anastrozole do?
It reduces the conversion of testosterone into estrogen. On testosterone therapy, some men develop estrogen levels high enough to cause symptoms, and a low dose can bring that back into range.
Does everyone on testosterone need it?
No — most men do not. It is prescribed when labs and symptoms together suggest estrogen is genuinely too high. Suppressing estrogen unnecessarily causes its own problems.
What happens if estrogen goes too low?
Joint aches, low libido, low mood and effects on bone density. This is why the dose is deliberately small and why follow-up labs matter.
How often will I be tested?
Your clinician will usually recheck estradiol along with testosterone at your follow-up panel, then periodically after that.
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Board-certified Family Nurse Practitioner with 15+ years of clinical experience, specializing in preventative wellness and biomarker-driven personalized care.