ADHD MEDICATIONS
ADHD Medications: A Complete Patient Guide
Starting medication can bring up a lot of questions. Here is what to expect, what to monitor, and when to check in with your prescriber.
Written for patients by the Verra Health Clinic team · Last reviewed August 2026
Why are ADHD medications prescribed?
Medication can reduce core ADHD symptoms and improve attention, impulse control, planning, task completion, and day-to-day functioning. It does not cure ADHD and is not the only treatment. Good sleep, regular movement, practical systems, therapy, coaching, and support for co-existing conditions remain important.
Stimulant medications
Stimulants are commonly used as first-line medication options. Canadian examples include methylphenidate products such as Ritalin, Concerta, Biphentin, and Foquest, and amphetamine products such as Vyvanse, Dexedrine, and Adderall XR. Different formulations release medication at different rates and last for different lengths of time.
Non-stimulant medications
Non-stimulants may be considered when stimulants are not effective, side effects are difficult, there are particular medical considerations, or there is concern about misuse. Options can include atomoxetine, guanfacine, clonidine, or bupropion in selected situations. Evidence, approvals, and prescribing practice vary, so your clinician will discuss what is appropriate for you.
How long do they take to work?
Many immediate-release stimulants begin working within about 30–60 minutes. Long-acting products may take longer to reach their main effect and can provide coverage through much of the day. Non-stimulants usually take longer to show their full benefit. The right dose is the lowest dose that provides meaningful benefit with acceptable side effects.
Common side effects
- Reduced appetite or weight change
- Dry mouth, headache, or nausea
- Difficulty falling asleep
- Jitteriness or increased anxiety
- Changes in heart rate or blood pressure
Contact your clinician promptly for chest pain, fainting, persistent palpitations, severe mood changes, hallucinations, or suicidal thoughts. Seek emergency care for severe or sudden symptoms.
Monitoring during treatment
Follow-up may include blood pressure, pulse, weight, appetite, sleep, mood, symptom improvement, functioning, side effects, adherence, and any concerns about misuse. Do not share medication, take extra doses, or combine it with recreational drugs.
Alcohol, driving, pregnancy, and breastfeeding
Alcohol may worsen attention, judgment, sleep, and medication side effects. Avoid driving if you feel impaired or have taken more than prescribed. If you are pregnant, planning pregnancy, or breastfeeding, discuss medication before making changes. Treatment decisions should weigh the benefits of symptom control and the available evidence for the specific medication.
Frequently asked questions
Will ADHD medication help immediately?
Many immediate-release stimulants work the same day. Long-acting stimulants may take longer to feel, while non-stimulants commonly require several weeks and gradual dose adjustment.
Can I drink coffee while taking ADHD medication?
Caffeine can increase jitteriness, anxiety, heart rate, or sleep problems for some people. Discuss your total caffeine intake with your clinician, especially when starting or changing medication.
Can ADHD medication be addictive?
Prescription stimulants have misuse and dependence risks, especially when taken differently from prescribed. Taking medication exactly as directed, storing it securely, and attending follow-up appointments reduces risk.
Can I stop ADHD medication suddenly?
Do not stop or change a prescribed medication without discussing it with your prescriber. The safest plan depends on the medication, dose, duration, symptoms, and reason for stopping.
Related resources
Understanding assessment and non-medication support.ADHD Medications While Breastfeeding
A focused guide for lactation and postpartum decisions.Choosing an ADHD Medication
Compare common Canadian formulations and practical considerations.
Questions about your own situation? Book an appointment or call (587) 404-2000.