Purpose
This information explains common issues discussed when stimulant medication is being considered for ADHD.
It is general information only. Your psychiatrist will discuss whether stimulant medication is appropriate for you.
What are stimulant medications?
Stimulant medications are commonly used to treat ADHD. They work by increasing the activity of certain brain chemicals involved in attention, impulse control, motivation, and executive functioning.
Stimulant medication is a class of prescription-only medicine. Availability, prescribing rules, formulations, and brand names vary, and any prescribing decision rests with the treating psychiatrist.
How can stimulants help?
For some people with ADHD, stimulants may improve:
- Attention
- Task initiation
- Follow-through
- Impulsivity
- Restlessness
- Emotional regulation
- Time management
- Distractibility
- Working memory
- Ability to complete routine tasks
Response varies. Medication does not teach skills by itself, but it may make strategies easier to use.
How quickly do they work?
Stimulants often act on the same day they are taken.
Short-acting medications may work for a few hours.
Longer-acting medications may last through much of the day.
Your psychiatrist will explain expected timing, dose adjustments, and monitoring.
Stimulant prescribing is not guaranteed
Stimulant prescribing is not guaranteed.
A psychiatrist may decide stimulants are not appropriate because of:
- Medical risk
- Mental health risk
- Substance use concerns
- Medicinal cannabis use
- Cardiovascular concerns
- Incomplete information
- Incomplete screening
- Prescription monitoring concerns
- State prescribing requirements
- Clinical judgement
Medication is not prescribed at the initial assessment. Any prescribing decision is made at a follow-up appointment after the psychiatrist completes their assessment.
Screening before stimulant treatment
Before stimulant treatment is considered, your psychiatrist may require:
- Medical history review
- Current medication review
- Blood pressure and pulse
- Blood tests where relevant
- ECG where clinically indicated
- GP medical clearance where relevant
- Substance use review
- Prescription monitoring checks
- Review of risks and benefits
Common side effects
Possible side effects include:
- Reduced appetite
- Difficulty sleeping
- Dry mouth
- Headache
- Nausea
- Increased heart rate
- Increased blood pressure
- Anxiety or jitteriness
- Irritability
- Mood changes
- Sweating
- Jaw tension
- Rebound symptoms as medication wears off
Many side effects can be managed by adjusting dose, timing, formulation, food intake, sleep, or treatment plan.
Less common but important risks
Less common risks may include:
- Significant increases in blood pressure or heart rate
- Worsening anxiety or agitation
- Mood instability
- Tics in some people
- Misuse or dependence
- Psychotic symptoms in rare cases
- Problems in people with certain heart conditions
- Interactions with other medications or substances
Tell your psychiatrist if you have a history of bipolar disorder, psychosis, substance use disorder, significant anxiety, heart problems, seizures, or severe sleep problems.
Taking medication safely
General safety guidance:
- Take only as prescribed
- Do not increase the dose without medical advice
- Do not share medication with anyone
- Store medication securely
- Avoid taking extra doses to work longer hours or study
- Tell your psychiatrist about other medications or substances
- Discuss alcohol, cannabis, nicotine, caffeine, and other stimulant use
- Report chest pain, fainting, severe agitation, psychotic symptoms, or suicidal thoughts urgently
Follow-up and shared care
Stimulant medication usually requires follow-up to assess benefit, side effects, dose, safety, and ongoing need.
Where clinically appropriate, ongoing prescribing may be handed back to your GP under a shared-care plan after stabilisation.
Important note
This information is general and may not apply to your situation. Your psychiatrist will provide personalised advice based on your assessment, health history, risks, and goals.