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Amphetamine

Published: July 26, 2026Updated: August 24, 2026

Amphetamine is a central nervous system stimulant used primarily to treat attention deficit hyperactivity disorder (ADHD) and narcolepsy. It works by increasing the levels of dopamine and norepinephrine in the brain, helping to improve focus, attention, and impulse control in patients with these conditions.

Quick summary

Amphetamine is a stimulant medication used to treat ADHD and narcolepsy by increasing certain brain chemicals that affect attention and impulse control.

Medically reviewed by WellAlly Editorial TeamLast reviewed August 24, 2026Editorial policy
BOXED WARNING

This medication carries a boxed (black box) warning — the strongest type of FDA warning. Review the full prescribing information before use.

Key facts at a glance

ATC
N06BA01
RxNorm
725
Generic
Amphetamine
Class
atc-n06
Brands
Evekeo, Dyanavel, Adzenys, Mydayis, Adderall
Availability
rx
Lactation
unknown
Routes
oral
Forms
tablet, suspension, capsule
Regions
US, EU, CN, JP
Monitoring
—

This page is for informational purposes only.

Do not use this information to diagnose yourself or to replace a physician's advice. Always consult a qualified healthcare provider before starting, stopping, or changing any medication. If you believe you are experiencing a medical emergency, call your local emergency number immediately.

Dosage and administration

adult (standard)tablet
Usual dose
5mg twice daily
Maximum
consult physician
Frequency
every 12 hours
Instructions
Follow physician instructions
Duration limits
as prescribed
Monitoring
standard
pediatric (standard)tablet
Usual dose
5mg once daily
Maximum
consult physician
Frequency
once daily
Instructions
Follow physician instructions
Duration limits
as prescribed
Monitoring
standard
geriatric (standard)tablet
Usual dose
5mg once daily
Maximum
consult physician
Frequency
once daily
Instructions
Follow physician instructions
Duration limits
as prescribed
Monitoring
standard

Overdose information

Important overdose information
Toxic dose: Single dose above 200mg may cause serious toxicity in adults, with lower doses potentially dangerous in children or sensitive individuals
Chronic overdose: Prolonged use leading to accumulation, especially with renal impairment or repeated high dosing
Immediate actions
Supportive care, airway management, intravenous benzodiazepines for agitation, cooling measures for hyperthermia, hydration
Antidote
No specific antidote exists(Treatment is supportive; effectiveness depends on timely intervention)
Poison Control: 1-800-222-1222

Special Populations

8 groups
✗

pregnancy

first trimester
unsafe
FDA Category
C
Dose Adjustment

avoid if possible

Key Recommendations

avoid use during pregnancy unless benefits significantly outweigh risks

Monitor

regular fetal monitoring and growth assessments

Use of this medication in this population requires careful consideration of risks and benefits.

✗

pregnancy

third trimester
unsafe
FDA Category
C
Dose Adjustment

avoid

Key Recommendations

discontinue use before third trimester when possible

Monitor

fetal monitoring for growth and development

Use of this medication in this population requires careful consideration of risks and benefits.

✗

lactation

breastfeeding
unsafe
FDA Category
C
Dose Adjustment

contraindicated

Key Recommendations

do not breastfeed during amphetamine treatment

Monitor

monitor infant for irritability, poor weight gain, and sleep disturbances

Use of this medication in this population requires careful consideration of risks and benefits.

✗

pediatric_age

under 6 years
contraindicated
FDA Category
C
Dose Adjustment

not recommended

Key Recommendations

amphetamines are not approved for children under 6 years of age

Monitor

regular developmental assessments if accidentally exposed

Use of this medication in this population requires careful consideration of risks and benefits.

⚠

pediatric_age

6 to 12 years
caution
FDA Category
C
Dose Adjustment

start with lowest dose

Key Recommendations

use with caution, close monitoring required; not for ADHD in children under 6

Monitor

regular monitoring of growth, weight, blood pressure, and heart rate

Use with caution and monitor for adverse effects.

⚠

geriatric

elderly
caution
FDA Category
C
Dose Adjustment

reduce starting dose

Key Recommendations

use with extreme caution; increased sensitivity to cardiovascular effects

Monitor

monitor blood pressure, heart rate, and cognitive function closely

Use with caution and monitor for adverse effects.

⚠

renal_impairment

severe renal impairment
caution
FDA Category
C
Dose Adjustment

reduce dose by 50%

Key Recommendations

use with caution; extended interval may be needed

Monitor

monitor renal function and drug accumulation

Use with caution and monitor for adverse effects.

⚠

hepatic_impairment

moderate hepatic impairment
caution
FDA Category
C
Dose Adjustment

reduce dose by 25-50%

Key Recommendations

use with caution; metabolism may be impaired

Monitor

monitor for increased adverse effects

Use with caution and monitor for adverse effects.

Statistics and clinical data

prescribingFDA
2023

Commonly prescribed since

Value:1940s

General prescribing information for amphetamine stimulants

drug_classWHO
2023

Drug class

Value:Psychostimulant (N06BA)

Anatomical Therapeutic Chemical classification

usageMedical guidelines
2023

Common uses

Value:ADHD, Narcolepsy, Attention regulation

Primary therapeutic applications

formulationFDA
2023

Available formulations

Value:Immediate-release, Extended-release, Liquid, Chewable

Dosage form variations

Amphetamine is primarily prescribed for attention deficit hyperactivity disorder (ADHD) to improve focus and reduce impulsive behavior, and for narcolepsy to help manage excessive daytime sleepiness. It may also occasionally be used short-term for weight management when other treatments have not been effective.

Amphetamine increases the release and blocks the reuptake of dopamine and norepinephrine in the brain, enhancing communication between nerve cells. This results in improved attention, alertness, and behavioral control.

Amphetamine is a controlled substance with a high potential for abuse and dependence. Common side effects include decreased appetite, insomnia, increased heart rate, and elevated blood pressure. It should only be used as prescribed and under close medical supervision, with regular monitoring of cardiovascular health and growth in pediatric patients.

Contraindications

Conditions and patient states where this medication should be avoided or used with caution.

Do not use (1)

ABSOLUTEhypersensitivity

Known allergy to this medication or its components

Use caution (1)

RELATIVEpregnancy

Consult healthcare provider for benefits vs risks assessment

Official drug label

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This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

Medical Disclaimer

This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.

If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.

Medically reviewed by WellAlly Editorial Team Last reviewed August 24, 2026. · Read our editorial policy