vitamin
Vitamin A
TL;DR
Fat-soluble vitamin essential for vision, immune function, and cellular communication. Exists as preformed vitamin A (retinoids) in animal products and provitamin A (carotenoids) in plants.
Overview
Fat-soluble vitamin essential for vision, immune function, and cellular communication. Exists as preformed vitamin A (retinoids) in animal products and provitamin A (carotenoids) in plants.
57 / 565
products in our database contain Vitamin A
Source · MoodStack database
Compound forms
Vitamin A comes in several molecular forms. Each absorbs and acts differently.
γ-Carotene
Gamma-carotene
Bioavailability
25%
Typical dose
6–12 mg
β-Carotene
Beta-carotene
Bioavailability
30%
Typical dose
3–15 mg
α-Carotene
Alpha-carotene
Bioavailability
25%
Typical dose
6–12 mg
Retinol
Retinol
Bioavailability
90%
Typical dose
700–3000 mcg
Retinyl acetate
Retinyl acetate
Bioavailability
85%
Typical dose
700–3000 mcg
Retinyl palmitate
Retinyl palmitate
Bioavailability
85%
Typical dose
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Benefits
- Supports healthy vision, especially night vision
- Essential for immune system function
- Promotes healthy skin and mucous membranes
- Supports reproductive health
- Important for bone growth and remodeling
Dose guide
Common dose
700-900 mcg RAE daily
Typical range
700–3000 mcg
Based on 57 products in our database.
Products with Vitamin A
Transparent Labs Multivitamin
Essential Multivitamin
Prenatal Multi + DHA Softgels
Multi for Her 50+ Tablets
Multi for Him Tablets
Multi for Him 50+ Tablets
Elite Multivitamin
Daily Multi Vitamins & Minerals
Multi for Her Tablets
Multivitamin Gummies
Interactions
synergistic. Zinc is required for retinol-binding protein synthesis (transports vitamin A from liver to tissues) and for converting retinol to retinal in the retina
competes. Vitamins A and D compete for the same nuclear receptor (RXR) binding partner; excessive vitamin A can antagonize vitamin D signaling and vice versa
synergistic. Vitamin A deficiency impairs iron mobilization from stores; vitamin A supplementation improves hemoglobin response to iron therapy in anemia
enhances. High-dose vitamin A (>25,000 IU) may potentiate warfarin by affecting vitamin K-dependent clotting factor synthesis
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Medical disclaimer: This content is for informational purposes only and does not constitute medical advice. Always consult a qualified healthcare provider before starting any supplement regimen.