All Supplements
Vitamin A vs Selenium
Side-by-side comparison — benefits, dosage, forms, and research.
Feature
Vitamin A
Selenium
Typical Dosage
700–900 mcg RAE daily (adults)
55–200 mcg daily
Best Form
Retinyl Palmitate
Selenomethionine
Key Benefits
5
5
Evidence Rating
★★★★
★★★★
Best Time
With food containing fat for optimal absorption
With meals to enhance absorption; consistent daily timing
Vitamin A Benefits
✓Supports healthy vision and prevents night blindness
✓Enhances immune system function and disease resistance
✓Promotes skin health and reduces acne
✓Supports bone health and calcium absorption
✓Protects against age-related macular degeneration
Selenium Benefits
✓Antioxidant protection through selenoprotein synthesis
✓Thyroid hormone metabolism and immune function
✓Reduced inflammation and oxidative stress
✓Male fertility and sperm motility support
✓Potential cognitive and cardiovascular health support
Can You Take Both Together?
In most cases, Vitamin A and Selenium can be taken together safely. However, always check the interactions section of each supplement and consult a healthcare professional if you take medication.
Which Should You Choose?
Choose Vitamin A if your primary goal is: supports healthy vision and prevents night blindness. Choose Selenium if your primary goal is: antioxidant protection through selenoprotein synthesis. Many people take both as they target different aspects of health.
Disclaimer: This comparison is for educational purposes only. Always consult a healthcare professional before starting any supplement.