Active ingredient: atomoxetine hydrochloride · Brand name: Strattera · Generic available worldwide
Atomoxetine is a non-stimulant ADHD medication that works by selectively blocking the reuptake of norepinephrine. It does not have a daily peak-and-trough cycle. Instead, it builds up over weeks to provide steady, around-the-clock coverage.
Atomoxetine works by selectively blocking the reuptake of norepinephrine in the prefrontal cortex. This increases norepinephrine availability in the synaptic gap, which translates into improved attention and impulse control for many people with ADHD.
Unlike stimulants, atomoxetine does not have a fast onset. The first dose does not produce a noticeable effect. The medication builds up over four to six weeks before reaching its full therapeutic level. During those weeks, what matters is consistent daily dosing and patient observation.
Once the medication is at steady state, it provides 24-hour coverage. There is no daily peak to time around. The question shifts from "where am I in my day" to "is this working overall, week by week".
Genetics matter. Atomoxetine half-life varies significantly by individual genetics. Most people are extensive metabolisers (half-life around five hours). Approximately 7% of Caucasian populations are poor metabolisers (half-life up to 22 hours), which can affect dosing.
Other non-stimulant ADHD medications. Different mechanisms but similar 'weeks-to-effect' framing.
Atomoxetine titration typically starts at 40mg daily for adults and increases to a target of 80mg after seven to fourteen days, then potentially up to 100mg if needed. Starting dose for body weight under 70kg is dose-banded.
Available doses: 10mg, 18mg, 25mg, 40mg, 60mg, 80mg, 100mg.
Atomoxetine is once daily. Some prescribers split the daily dose into morning and evening administrations, particularly during titration. The exact schedule comes from your prescriber.
The single most important thing about atomoxetine is patience. The first dose does not work. The first week does not work. Many people see no effect at all in the first two to three weeks. The decision about whether atomoxetine is working should be made at four to six weeks, not earlier.
Atomoxetine can be taken with or without food. Some prescribers suggest taking it with food during titration to reduce stomach side effects. The capsule contents should not be opened.
ADHDose does not model a daily concentration curve for atomoxetine because there isn't one to track. Instead, it focuses on the metrics that actually matter for non-stimulants: daily focus, sleep, mood, energy and side effects. Across the four-to-six-week titration window, the patterns become visible. The Clinician Summary export pulls that history into a structured PDF for your prescriber.
Atomoxetine has no daily curve to model. Instead, what matters is daily focus, sleep, mood and side effects across the weeks it takes to reach full effect. ADHDose tracks that for you.
Atomoxetine takes four to six weeks to reach full effect. Daily logging across that period is how you and your prescriber will know whether it's working. ADHDose makes the logging structured and the patterns visible.
Most people tolerate Atomoxetine well, especially after the first few weeks. Here are the patterns worth noticing — and the ones that warrant a call to your prescriber.
Most ease in the first two to four weeks. Logging them daily helps you and your prescriber decide whether they are settling or sticking.
Not emergencies, but worth bringing up. ADHDose tags recurring patterns automatically in your daily logs.
Rare, but worth knowing. If you see any of these, contact your prescriber rather than stopping on your own.
The first weeks of Atomoxetine have a recognisable shape. Knowing what is normal at each stage stops you reading too much into a single bad day.
Non-stimulants do not work like stimulants. The first dose does not produce a noticeable effect. The first week is mostly about managing initial side effects (mild nausea, fatigue, dry mouth) while your body adjusts.
Initial side effects typically settle by week two or three. Still no clinically meaningful effect on attention or impulse control yet — that is the nature of non-stimulants.
Most people start noticing real effect around the four-week mark — sometimes earlier with Qelbree, sometimes later with atomoxetine. The effect tends to feel less dramatic than stimulants and more like a gradual improvement in baseline function.
Most non-stimulants reach their full therapeutic effect by six to eight weeks. By this point you and your prescriber should have a clear sense of whether the medication is working for you.
Once at steady state, non-stimulants are typically reviewed at three to six month intervals. Daily logging across the first eight weeks gives the prescriber the evidence they need to confirm response.
ADHDose makes the milestone view concrete. Daily logs of focus, sleep, energy and side effects across the titration window show the trajectory clearly — to you, and to your prescriber when review day arrives.