Switch to Stimulants as First-Line Alternative
If Strattera (atomoxetine) is causing tremors, discontinue it and switch to stimulant medications—specifically methylphenidate or lisdexamfetamine—as these are first-line ADHD treatments with superior efficacy and different side effect profiles that do not typically include tremors. 1
Why Stimulants Should Be Your Next Choice
The evidence is clear: stimulants should have been first-line therapy from the start. Current guidelines consistently recommend stimulants (methylphenidate, amphetamines/lisdexamfetamine) as first-line pharmacological treatment, with non-stimulants like atomoxetine reserved as second-line options 1. Since atomoxetine is causing intolerable side effects (tremors), this is the appropriate time to move to the more effective medication class.
Key advantages of switching to stimulants:
- Larger effect sizes for reducing ADHD core symptoms compared to atomoxetine 1
- Rapid onset of treatment effects (versus 6-12 weeks for atomoxetine) 1
- Different side effect profile—tremors are not a characteristic stimulant side effect 1
Specific Medication Recommendations
Start with methylphenidate in a long-acting formulation:
- Available in multiple extended-release formulations allowing individualization 1
- Can provide coverage throughout the school/work day
- Chewable tablets, liquid formulations, and transdermal patches available for those who cannot swallow pills 1
If methylphenidate fails after adequate trial (proper dosage and duration):
- Switch to lisdexamfetamine as the preferred next option over returning to non-stimulants 1
- This amphetamine prodrug has robust efficacy data 2, 1
Common Stimulant Side Effects to Monitor
Unlike the tremors from atomoxetine, stimulants typically cause:
- Decreased appetite (monitor height and weight) 1
- Sleep disturbances 1
- Increased blood pressure and pulse (check at each visit) 1
- Headaches 1
These are generally mild and manageable, unlike the intolerable tremor you're experiencing.
Alternative Non-Stimulant Options (If Stimulants Also Fail)
Only if stimulants are contraindicated, not tolerated, or ineffective should you consider other non-stimulants:
Alpha-2 agonists (guanfacine extended-release or clonidine extended-release):
- Provide "around-the-clock" effects 1
- Different mechanism than atomoxetine (alpha-2 adrenergic receptor agonism vs. norepinephrine reuptake inhibition) 1
- Main side effects are somnolence/sedation, fatigue, hypotension—not tremors 1
- Take 2-4 weeks for full effect 1
- Can be used as monotherapy or added to stimulants 1, 3
Consider alpha-2 agonists as first-line alternatives only if:
- Comorbid tic disorder or Tourette's syndrome 1
- Comorbid substance use disorder (stimulants may be contraindicated) 1
- Comorbid sleep disturbances 1
- Comorbid disruptive behavior disorders 1
Critical Pitfall to Avoid
Do not simply try another non-stimulant (like guanfacine) before attempting stimulants unless there's a specific contraindication. The evidence hierarchy is clear: stimulants have larger effect sizes than all non-stimulants 1. You've already tried the most effective non-stimulant (atomoxetine) and it failed due to side effects. Moving to a less effective non-stimulant class (alpha-2 agonists) without trying the most effective medication class (stimulants) would be suboptimal care.
Monitoring Requirements
When starting stimulants, monitor:
- Blood pressure and pulse at each visit 1
- Height and weight regularly in children 1
- Cardiac history before starting—screen for personal/family history of heart problems, sudden death, or structural cardiac abnormalities 1
Treatment Should Be Multimodal
Regardless of medication choice, combine pharmacotherapy with:
- Psychoeducation for patient and family 1
- Behavioral interventions as appropriate 2, 1
- School accommodations and environmental modifications 2, 1
The medication change from atomoxetine to a stimulant addresses the tremor issue while providing superior symptom control based on the strongest available evidence.