Strattera dosage: quick, practical guide
Need a straight answer on Strattera (atomoxetine) dosing? Here’s what doctors commonly use and why dose changes matter. This isn’t medical advice — it’s a clear summary so you can talk with your prescriber armed with facts.
Typical starting and target doses
Adults: most adults start at 40 mg once daily for a few days, then move to 80 mg daily. If needed, some patients go up to 100 mg/day, but your doctor monitors the benefit and side effects before increasing.
Children and teens (by weight): if the child weighs less than 70 kg, doctors often start at 0.5 mg/kg once daily for a few days, then increase to about 1.2 mg/kg/day. For kids 70 kg or more, dosing mirrors adults: start 40 mg, then 80 mg daily. The usual maximum is around 1.4 mg/kg/day or 100 mg/day — whichever is lower.
How to take it, timing, and missed doses
Take Strattera once daily in the morning or split into morning and late afternoon doses if stomach upset or insomnia occurs. Capsules can be taken with or without food.
Missed a dose? Take it as soon as you remember the same day. Don’t double up the next dose.
How fast does it work? You might notice improvement in 2–4 weeks; full effects can take 6–8 weeks. If you don’t see change after a few weeks, check in with your prescriber before adjusting the dose.
Side effects to watch for include decreased appetite, nausea, dry mouth, trouble sleeping, increased heart rate, and higher blood pressure. Serious but rare problems include liver issues and mood changes, including suicidal thoughts in young people. Your doctor should monitor blood pressure, heart rate, mood, and any new symptoms after starting or changing the dose.
Drug interactions matter. Avoid starting Strattera with an MAOI. Strong CYP2D6 inhibitors (like fluoxetine, paroxetine, or quinidine) can raise atomoxetine levels and may require dose changes. Tell your prescriber about all medicines — prescription, over-the-counter, and herbal.
When to be extra careful: if you have high blood pressure, heart disease, a history of liver problems, glaucoma, or a personal or family history of bipolar disorder or suicidal behavior, discuss risks and monitoring with your doctor before starting Strattera.
Thinking of stopping? Don’t stop suddenly without medical advice. Your prescriber can help taper or switch medications safely.
Bottom line: Strattera dosing follows weight and age rules, with clear starting and max doses. Keep track of side effects, watch blood pressure and mood, and work closely with your prescriber. Got questions about a specific dose? Ask your clinician — they’ll tailor the plan to you or your child’s needs.
