All Supplements
Folate (B9) vs Selenium
Side-by-side comparison — benefits, dosage, forms, and research.
Feature
Folate (B9)
Selenium
Typical Dosage
400-800 mcg daily for adults
55–200 mcg daily
Best Form
Methylfolate (5-MTHF)
Selenomethionine
Key Benefits
5
5
Evidence Rating
★★★★★
★★★★
Best Time
With food, preferably at breakfast
With meals to enhance absorption; consistent daily timing
Folate (B9) Benefits
✓Supports DNA synthesis and cell division
✓Reduces homocysteine levels for cardiovascular health
✓Essential for foetal neural tube development
✓Enhances mood and supports cognitive function
✓Supports methylation and detoxification pathways
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, Folate (B9) 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 Folate (B9) if your primary goal is: supports dna synthesis and cell division. 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.