All Supplements
Vitamin A vs Vitamin B1 (Thiamine)
Side-by-side comparison — benefits, dosage, forms, and research.
Feature
Vitamin A
Vitamin B1 (Thiamine)
Typical Dosage
700–900 mcg RAE daily (adults)
1.1-1.2 mg daily for adults
Best Form
Retinyl Palmitate
Thiamine Hydrochloride
Key Benefits
5
5
Evidence Rating
★★★★
★★★★
Best Time
With food containing fat for optimal absorption
With meals to enhance absorption
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
Vitamin B1 (Thiamine) Benefits
✓Energy metabolism support
✓Nervous system health
✓Heart function
✓Cognitive performance
✓Muscle maintenance
Can You Take Both Together?
In most cases, Vitamin A and Vitamin B1 (Thiamine) 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 Vitamin B1 (Thiamine) if your primary goal is: energy metabolism support. 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.