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1. Anatomy
2. Microbiology
3. Physiology
4. Pathology
5. Pharmacology
6. Immunology
7. Biochemistry
8. Cell and molecular biology
9. Biostatistics and epidemiology
10. Genetics
11. Behavioral science
11.1 Defense mechanisms
11.2 Personality traits and disorders
11.3 Psychotic disorders
11.4 Antipsychotic drugs
11.5 Anxiety disorders
11.6 Stress disorders
11.7 Mood disorders
11.8 Grief or bereavement
11.9 Serotonin syndrome
11.10 Somatic symptom disorder
11.11 Eating disorders
11.12 Disorders originating in infancy/childhood
11.13 Drugs used in the treatment of ADHD
11.14 Autism spectrum disorder (ASD)
11.15 Developmental milestones in children
11.16 Substance use disorders
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11.13 Drugs used in the treatment of ADHD
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11. Behavioral science

Drugs used in the treatment of ADHD

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Stimulants (enhance arousal in the prefrontal cortex)
Drug Mechanism of action
Methylphenidate (Ritalin, Methylin, Focalin) Inhibits presynaptic dopamine, and norepinephrine (to a smaller extent), transporters of central adrenergic neurons; increases the concentration of dopamine and NE in the synaptic cleft
Amphetamine (Adderall, Evekeo, Dexedrine etc.) Competitive inhibitor of dopamine and NE, acting directly on dopamine transporter and norepinephrine transporter binding sites; stimulation of peripheral alpha and beta receptors
Non-stimulants
Drug Mechanism of action
Atomoxetine Selective norepinephrine reuptake inhibitor, which causes increased concentrations of norepinephrine and dopamine in the prefrontal cortex. Lacks abuse potential. Increases suicide risk, may cause decreased appetite, nausea, vomiting, diarrhea, fatigue, mood swings, dizziness, insomnia, liver damage, prolongation of QTc. Contraindications similar to stimulants
Other medications Clonidine and guanfacine are alpha 2 agonists

Adverse effects of stimulants include decreased appetite, nausea, weight loss, sleep disturbances, headache, tics, increased heart rate and blood pressure, irritability, seizures, psychosis, euphoria, mania and depression. Stimulants may be abused. Stimulants are contraindicated with MAOIs and in glaucoma. Caution should be used while prescribing in patients with cardiovascular disease, hyperthyroidism and hypertension.

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