Skip to content

Vitamin A

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

Vitamin A is an essential fat-soluble vitamin that plays a crucial role in maintaining healthy vision, immune function, and skin integrity. It is used to treat and prevent vitamin A deficiency, which can cause night blindness, dry eyes, and skin problems.

Quick summary

Vitamin A is an essential vitamin used to treat deficiency and support vision, immune function, and skin health.

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

Key facts at a glance

ATC
A11CA01
RxNorm
11246
Generic
Vitamin A
Class
atc-a11
Brands
Multi-Delyn, Lactocal, Vitafol-One, Infuvite, Infuvite Pediatric, Vital E- A + D3, Vital E- Repro, Vital E- Newborn, Aquasol A, Poly-Vi-Sol, Tri-Vi-Sol, MVC-Fluoride
Availability
rx
Lactation
unknown
Routes
oral, sublingual, topical
Forms
injection, solution, tablet, capsule, suspension
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
3,000 IU daily
Maximum
consult physician
Frequency
once daily
Instructions
Follow physician instructions
Duration limits
as prescribed
Monitoring
standard
pediatric (standard)tablet
Usual dose
1,000 IU daily
Maximum
consult physician
Frequency
once daily
Instructions
Follow physician instructions
Duration limits
as prescribed
Monitoring
standard
geriatric (standard)tablet
Usual dose
3,000 IU 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 of approximately 100,000 IU (about 30 mg retinol) may cause serious acute toxicity in adults
Chronic overdose: Regular intake exceeding 10,000 IU (3 mg RAE) per day for several months may lead to chronic toxicity
Immediate actions
Gastric lavage if within 1-2 hours of ingestion, activated charcoal, supportive care, discontinue vitamin A supplementation
Antidote
No specific antidote exists(Treatment is supportive and symptomatic; no specific antidote available)
Poison Control: 1-800-222-1222

Special Populations

8 groups
✗

pregnancy

first trimester
unsafe
FDA Category
X
Dose Adjustment

avoid high doses (>10,000 IU/day)

Key Recommendations

avoid use during pregnancy unless benefits outweigh risks; do not exceed 8,000 IU/day

Monitor

regular prenatal monitoring

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

⚠

pregnancy

second third trimester
caution
FDA Category
C
Dose Adjustment

limit to recommended dietary allowance

Key Recommendations

do not exceed 3,000 IU (900 mcg RAE) daily from all sources

Monitor

standard prenatal care

Use with caution and monitor for adverse effects.

✓

lactation

postpartum
safe
FDA Category
C
Dose Adjustment

continue standard dosing

Key Recommendations

generally safe; breastfeeding mothers should ensure adequate intake but not exceed 4,000 IU/day

Monitor

none specific

⚠

pediatric_age

infants 0 12 months
caution
FDA Category
C
Dose Adjustment

use only as directed by pediatrician

Key Recommendations

supplementation only under medical supervision; avoid excessive dosing

Monitor

growth monitoring

Use with caution and monitor for adverse effects.

✓

pediatric_age

children 1 8 years
safe
FDA Category
C
Dose Adjustment

age-appropriate dosing only

Key Recommendations

follow age-specific recommendations; do not exceed 2,000 IU/day for ages 1-3

Monitor

routine pediatric checkups

⚠

geriatric

65 years and older
caution
FDA Category
C
Dose Adjustment

monitor liver function

Key Recommendations

use with caution; consider reduced dosing if liver function compromised

Monitor

periodic liver function tests

Use with caution and monitor for adverse effects.

✓

renal_impairment

severe ckd
safe
FDA Category
C
Dose Adjustment

no significant adjustment needed

Key Recommendations

generally safe at recommended doses; no renal excretion concerns

Monitor

standard renal function monitoring

⚠

hepatic_impairment

liver disease
caution
FDA Category
C
Dose Adjustment

reduce dose or avoid

Key Recommendations

use with extreme caution; vitamin A accumulates in liver and may exacerbate liver damage

Monitor

regular liver function tests and vitamin A level monitoring

Use with caution and monitor for adverse effects.

Statistics and clinical data

drug_classNIH
2023

Drug class

Value:Fat-soluble vitamin (Retinoid)

Vitamin A belongs to the retinoid family of compounds

usageWHO
2023

Common uses

Value:Treatment of Vitamin A deficiency, night blindness, xerophthalmia

Primary therapeutic indications for Vitamin A supplementation

prescribingFDA
2023

Commonly prescribed since

Value:1940s

Historical prescribing information for Vitamin A supplements

regulatoryFDA
2023

Regulatory status

Value:Over-the-counter (OTC) dietary supplement

FDA classification of Vitamin A as a dietary supplement

Treatment and prevention of vitamin A deficiency, night blindness, xerophthalmia, measles in vitamin A deficient children, and as a supplement in malabsorption syndromes

Vitamin A is essential for the production of rhodopsin in retinal rods (enabling night vision), maintaining epithelial cell integrity, and supporting immune system function through lymphocyte activity and mucosal defenses

Should not exceed recommended daily allowance during pregnancy as high doses can cause birth defects. Fat malabsorption conditions may impair absorption. May interact with retinoids, tetracyclines, and anticoagulants.

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

WellAlly may earn a referral fee from linked resources at no extra cost to you. Editorial content is never influenced by commercial relationships.

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