What is Vitamin A: Uses, Warnings & Interactions

Updated May 14, 2025  •  Published Dec 30, 2020

Vitamin A overview

BRAND NAMES:

  • PharmAssure Vitamin A, PharmAssure Vitamin A

Generic Names:

  • Vitamin A

Uses:

  • Treats vitamin A deficiency.

Therapeutic Classes:

  • Nutritive Agent, Vitamin Combination, Adult Formula

Forms:

  • Capsule, Liquid, Liquid Filled Capsule, Tablet

How it’s taken:

  • By mouth

What is Vitamin A used for?

What form(s) does Vitamin A come in

  • Capsule

  • Liquid

  • Liquid Filled Capsule

  • Tablet

What are common Vitamin A doses?

  • Bottle 100 Capsules

  • Bottle 110 Capsules

Common Vitamin A prescriptions

  • Vitamin A
    100 capsules bottle

How to take Vitamin A

  • Your doctor will tell you how much to take and how often.

  • May be taken directly or mixed with fruit juice.

  • Your doctor will tell you how much to take and how often.

  • May be taken directly or mixed with fruit juice.

  • Skip the missed dose if it is almost time for your next dose.

  • You should not use two doses at the same time.

What to do if you miss a dose of Vitamin A

  • Missing a dose is not a cause for concern.

  • You can take the missed dose as soon as you remember.

  • You should not use two doses at the same time.

  • Skip the missed dose if it is almost time for your next dose.

Vitamin A contraindications

  • You should not use this medicine if you have ever had an allergic reaction to vitamin A. Tell your doctor if you have liver disease. Vitamin A should not be taken by pregnant women or those who plan to become pregnant.

Vitamin A warnings

  • Large doses of vitamin A should be taken only if your doctor orders it.

  • Large amounts of vitamin A taken for a long time can be harmful.

  • Confusion

  • Irritability

  • Bone or joint pain

Vitamin A interactions

  • Follow your doctor's orders if he or she has given you a special diet.

  • Make sure your doctor knows if you are taking birth control pills or Accutane® before you take this medicine.

Vitamin A side effects

Serious Side Effects

  • Double vision

  • Confusion

  • Severe drowsiness

  • Bone or joint pain

  • Irritability

Less Serious Side Effects

  • Loss of appetite

  • Headache

  • Dry and cracked lips or skin

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