What Is Atomoxetine (Strattera)? Uses, Dosage, and What You Need to Know in 2026

Atomoxetine is an FDA-approved medication for treating attention deficit hyperactivity disorder (ADHD) in children ages 6 and older, adolescents, and adults. It was originally marketed under the brand name Strattera by Eli Lilly until the brand was discontinued in November 2023. Today, it is available only as generic atomoxetine — but it's the same medication, with the same effectiveness, at a fraction of the original brand price.

What Makes Atomoxetine Different From Other ADHD Medications?

The most important thing to understand about atomoxetine is that it is not a stimulant. Most ADHD medications — including Adderall, Ritalin, Vyvanse, and Concerta — are stimulants that are classified as Schedule II controlled substances. Atomoxetine is not scheduled; it is a selective norepinephrine reuptake inhibitor (sNRI).

This distinction matters for several reasons:

No abuse potential — atomoxetine does not produce euphoria or cause dependence

No monthly prescription required — can be refilled like any non-controlled medication

Available via telehealth without in-person visit requirements

24-hour coverage with once-daily dosing (no "wearing off" like many stimulants)

What Is Atomoxetine Used For?

FDA-Approved Uses

Atomoxetine is FDA-approved for one indication: ADHD. It is approved for:

Children ages 6 years and older

Adolescents

Adults

It treats all three subtypes of ADHD: predominantly inattentive, predominantly hyperactive-impulsive, and combined type.

Off-Label Uses

Atomoxetine is sometimes prescribed off-label for treatment-resistant depression in adults, though it is not FDA-approved for this use. Some clinicians also explore its use in cognitive disengagement syndrome (formerly called "sluggish cognitive tempo").

Who Is Atomoxetine Best Suited For?

Atomoxetine is often the first choice for ADHD patients who:

Have a personal or family history of substance use disorder

Have significant comorbid anxiety (stimulants can worsen anxiety)

Had intolerable side effects from stimulants (insomnia, appetite suppression, rebound, mood changes)

Prefer a non-controlled medication for professional or personal reasons

Need coverage that extends into the evening without a second dose (24-hour effect)

Dosing: How Much Do You Take?

Atomoxetine comes in capsules in 7 strengths: 10 mg, 18 mg, 25 mg, 40 mg, 60 mg, 80 mg, and 100 mg.

Adults and Children Over 70 kg (154 lbs)

Starting dose: 40 mg per day (once daily in morning, or twice daily as morning + late afternoon)

After minimum 3 days: increase to 80 mg per day

After 2–4 weeks: may increase to 100 mg per day if needed

Maximum dose: 100 mg per day

Children Under 70 kg (154 lbs)

Starting dose: 0.5 mg/kg/day

After minimum 3 days: increase to 1.2 mg/kg/day

Maximum dose: 1.4 mg/kg/day or 100 mg (whichever is less)

How Long Does Atomoxetine Take to Work?

This is one of the biggest differences between atomoxetine and stimulants: atomoxetine is not immediate-acting. Some patients notice small improvements within 1–2 weeks, but most don't feel the full therapeutic effect until 4–8 weeks of consistent daily dosing. This is normal and expected — it doesn't mean the medication isn't working.

Stimulants like Adderall work within 30–60 minutes. Atomoxetine gradually builds up in the system. Patients who give up during the first few weeks because "nothing is happening" often miss the benefit that would have arrived at week 4–6.

How to Take Atomoxetine

Take with or without food (food helps reduce nausea)

Swallow capsules whole — do not open, crush, or chew them

Take at the same time(s) every day for consistent levels in your system

If you miss a dose, take it as soon as you remember — but don't double up to make up for a missed dose

Who Should NOT Take Atomoxetine?

People currently taking or recently stopping MAOIs (within 2 weeks)

People with narrow angle glaucoma

People with a history of pheochromocytoma

Children under 6 years of age (not studied in this age group)

For a deeper dive into how this medication works in the brain, see our companion article: How Does Atomoxetine Work? Mechanism of Action Explained.