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Adderall (AMPHETAMINE)

brandsClassAdderall commonly prescribed forHow Adderall worksHow long until Adderall worksNotable Side EffectsLife Threatening Side Effectsweight gainsedationWhat to do about Adderall side effectsusual dosage rangeDosage Formslong term usehabit formingRenal ImpairmentHepatic ImpairmentCardiac ImpairmentElderlyChildren and AdolescentsPregnancyBreast Feeding

THERAPEUTICS

brands

  • Adderall

Class

  • Neuroscience-based Nomenclature: dopamine, norepinephrine reuptake inhibitor and releaser (DN-RIRe)
  • Stimulant

Adderall commonly prescribed for

(Bold for FDA approved)

• Attention deficit hyperactivity disorder (ADHD) in patients ages 3 and older
• Narcolepsy in patients ages 6 and older
• Exogenous obesity in patients ages 12 and older

• Treatment-resistant depression

How Adderall works

• Increases norepinephrine and especially dopamine actions by blocking their reuptake and facilitating their release

• Enhancement of dopamine and norepinephrine actions in certain brain regions (e.g., dorsolateral prefrontal cortex) may improve attention, concentration, executive function, and wakefulness

• Enhancement of dopamine actions in other brain regions (e.g., basal ganglia) may improve hyperactivity

• Enhancement of dopamine and norepinephrine in yet other brain regions (e.g., medial prefrontal cortex, hypothalamus) may improve depression, fatigue, and sleepiness

How long until Adderall works

• Some immediate effects can be seen with first dosing

• Can take several weeks to attain maximum therapeutic benefit, especially as dose is being titrated

SIDE EFFECTS

Notable Side Effects

• Insomnia, headache, exacerbation of tics, nervousness, irritability, overstimulation, tremor, dizziness

• Anorexia, nausea, dry mouth, constipation, diarrhea, weight loss, dry mouth

• Peripheral vasculopathy, including Raynaud’s syndrome

• Can temporarily slow normal growth in children (controversial)

• Sexual dysfunction long-term (impotence, libido changes) but can also improve sexual dysfunction short-term

Life Threatening Side Effects

• Psychotic episodes, especially with parenteral abuse

• Seizures

• Palpitations, tachycardia, hypertension

• Rare activation of hypomania, mania, or suicidal ideation (controversial)

• Cardiovascular adverse effects, sudden death in patients with preexisting cardiac structural abnormalities

weight gain

unusual

unusual

sedation

unusual

unusual

What to do about Adderall side effects

• Wait

• Adjust dose

• Switch to a long-acting stimulant

• Switch to another agent

• For insomnia, avoid dosing in afternoon/ evening

DOSING AND USE

usual dosage range

• Narcolepsy: 5–60 mg/day in divided doses

• ADHD: varies by formulation; see How to Dose section

• Exogenous obesity: 30 mg/day in divided doses

Dosage Forms

• Immediate-release : 5 mg, 7.5 mg,10 mg, 12.5 mg, 15 mg, 20 mg, 30 mg

• Extended-release capsule : 5 mg, 10 mg, 15 mg, 20 mg, 25 mg, 30 mg

long term use

• Often used long-term for ADHD when ongoing monitoring documents continued efficacy

• Dependence and/or abuse may develop

• Tolerance to therapeutic effects may develop in some patients, in which case a dose increase should be considered

• Long-term stimulant use may be associated with growth suppression in children (controversial)

• Periodic monitoring of weight, blood pressure, heart rate, complete blood count, platelet counts, and liver function may be prudent

habit forming

• High abuse potential, Schedule II drug

• Patients may develop tolerance, psychological dependence

SPECIAL POPULATIONS

Renal Impairment

• No dose adjustment necessary

Hepatic Impairment

• No dose adjustment necessary

Cardiac Impairment

• Use with caution, particularly in patients with recent myocardial infarction or other conditions that could be negatively affected by increased blood pressure

• Do not use in patients with structural cardiac abnormalities, cardiomyopathy, serious heart arrhythmias, or coronary artery disease

Elderly

• Some patients may tolerate lower doses better

Children and Adolescents

• Safety and efficacy not established under age 3

• Use in young children should be reserved for the expert

• d,l-amphetamine may worsen symptoms of behavioral disturbance and thought disorder in psychotic children

• d,l-amphetamine has acute effects on growth hormone; long-term effects are unknown but weight and height should be monitored during long-term treatment

• ADHD: ages 3–5: initial 2.5 mg/day; can increase by 2.5 mg each week

• Narcolepsy: ages 6–12: initial 5 mg/day; increase by 5 mg each week

• Half-life and duration of clinical action tend to be shorter in younger children

• Usual dosing has been associated with sudden death in children with structural cardiac abnormalities

Pregnancy

• Controlled studies have not been conducted in pregnant women

• Infants whose mothers take d,lamphetamine during pregnancy may experience withdrawal symptoms

• Use in women of childbearing potential requires weighing potential benefits to the mother against potential risks to the fetus

• For ADHD patients, d,l-amphetamine should generally be discontinued before anticipated pregnancies

Breast Feeding

• Some drug is found in mother’s breast milk

• Recommended either to discontinue drug or formula feed

• If infant shows signs of irritability, drug may need to be discontinued

Based on data Published online by Cambridge University Press

Compiled by Dr. Jash Ajmera