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L-Theanine vs Vitamin B2 (Riboflavin)
Side-by-side comparison — benefits, dosage, forms, and research.
Feature
L-Theanine
Vitamin B2 (Riboflavin)
Typical Dosage
100-200mg daily
1.1–1.6 mg daily
Best Form
L-Theanine (Suntheanine)
Riboflavin (free form)
Key Benefits
5
6
Evidence Rating
★★★★
★★★★
Best Time
With caffeine for focus, or evening for relaxation
With meals for optimal absorption
L-Theanine Benefits
✓Calm focus without sedation
✓Reduces caffeine jitters when combined
✓Promotes alpha brain waves (relaxed alertness)
✓May improve sleep quality
✓Anxiety reduction
Vitamin B2 (Riboflavin) Benefits
✓Energy production and metabolism
✓Antioxidant protection
✓Eye health and vision
✓Nervous system support
✓Skin and hair health
✓Migraine prevention
Can You Take Both Together?
In most cases, L-Theanine and Vitamin B2 (Riboflavin) 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 L-Theanine if your primary goal is: calm focus without sedation. Choose Vitamin B2 (Riboflavin) if your primary goal is: energy production and metabolism. 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.