Dose Track reminds you on the days you take anastrozole, logs each tablet, and puts your estradiol results right next to the doses before each blood test. That makes it easy to see how your estradiol moved after a change your prescriber made.
The Arimidex label gives a single dose with no titration: one 1 mg tablet once a day, with or without food. For advanced breast cancer it is continued until the tumor progresses. For early breast cancer after surgery the best length is unknown; in the ATAC trial it was given for five years. No dose change is needed for kidney problems, older age or mild-to-moderate liver problems.
| Use | Dose | How long |
|---|---|---|
| Adjuvant treatment of early breast cancer | 1 mg once a day | Optimal duration unknown; five years in the ATAC trial |
| Advanced breast cancer (first-line or second-line) | 1 mg once a day | Continued until tumor progression |
| Kidney impairment or elderly patients | 1 mg once a day | No dosage adjustment necessary |
| Mild-to-moderate liver impairment | 1 mg once a day | No change recommended; not studied in severe liver impairment |
The label above is for its only approved use: breast cancer in postmenopausal women. On TRT, anastrozole is used off-label to lower estradiol; the AUA 2018 guideline lists aromatase inhibitors among options in men with low testosterone who want to keep fertility, and notes only hCG is FDA approved in males.
Whether to take it, and on which days, is your prescriber's call. Dose Track supports daily, chosen weekdays and every-N-days schedules, so you can set exactly what you were given and log the dose your prescriber set.
Arimidex and generic anastrozole come as 1 mg tablets, the only strength on the label. Tablets come in bottles; Dose Track counts them down as you log.
Each row is something worth writing down for Anastrozole, why it matters for this medicine, and what Dose Track does with it.
| What to track | Why it matters | In Dose Track |
|---|---|---|
| Dose days | Off-label TRT schedules are often not daily, which makes doses easy to forget. | Pick weekdays or every N days, with a reminder for each. |
| Estradiol | Anastrozole blocks the enzyme that turns testosterone into estradiol. | Upload a lab report; estradiol is read out, charted against your doses and judged against a target range you set. |
| Tablets left | A bottle runs out on a schedule set by your dose days. | Each logged tablet comes off the bottle, with a run-out date. |
| Joint symptoms and mood | The label's trial reported joint symptoms in 36% and mood changes in 19% (against tamoxifen, in women with breast cancer). | Quick picks for aromatase inhibitors: joint pain, tiredness, low mood and headache, with a severity. |
| Bone and cholesterol labs | The label warns about bone density loss and raised cholesterol (5.2, 5.3). | Lipids from lab reports are read out and charted; HDL and LDL targets can be set. |
The Arimidex label compares it with tamoxifen, not placebo. In the ATAC trial, hot flashes affected 36% on Arimidex vs 41% on tamoxifen, joint symptoms 36% vs 29%, fatigue 19% vs 18%, mood changes 19% vs 18%, and fractures 10% vs 7%. High cholesterol was reported in 9% vs 3.5%. Arimidex has no boxed warning.
Dose Track's quick picks for aromatase inhibitors are joint pain, tiredness, low mood and headache. Type in anything else and set how bad it was.
Arimidex side effects from the FDA label
The Arimidex Patient Information says to take a missed dose when you remember unless the next one is nearly due, and never two at once (17). That rule is written for the daily breast cancer dose; for an off-label TRT schedule, ask your prescriber. Missed an Arimidex dose.
In Dose Track a missed dose stands out in your history, so you can see the gap and count from the right day.
Dose Track is a tracking app, not medical advice. It records what you and your prescriber decide; it does not recommend doses. Check any dose change with your prescriber.
Sources: the FDA label for Arimidex (anastrozole), version of March 5, 2026; our Anastrozole compound guide. Read on DailyMed or the guides linked above; app features checked against the current app.
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