Vitamin B1 vs Vitamin B2

TL;DR

Quick comparison: Vitamin B1 and Vitamin B2 have 0 overlapping categories and appear together in 40 products.

•Choose Vitamin B1 if: Water-soluble vitamin (thiamine) essential for energy metabolism, nerve function...
•Choose Vitamin B2 if: Riboflavin 5-Phosphate, the active vitamin B2 form, supports energy metabolism, ...
•Take both if: You want comprehensive coverage across 0 shared categories.

564 products

analyzed in our comprehensive supplement database

Source: MoodStack Database (2026)

Side-by-Side Comparison

Feature	Vitamin B1	Vitamin B2
Type	vitamin	vitamin
Common Dosage	1.1-1.2 mg daily	25mg
Best Bioavailability	Thiamine HCl (95%)	Riboflavin (90%)
Categories	0	0
Available Products	0	0

Vitamin B1

Typevitamin

Common Dosage1.1-1.2 mg daily

Best BioavailabilityThiamine HCl (95%)

Categories0

Available Products0

Vitamin B2

Typevitamin

Common Dosage25mg

Best BioavailabilityRiboflavin (90%)

Categories0

Available Products0

Can You Take Both?

Yes, Vitamin B1 and Vitamin B2 can typically be taken together. In fact, we found 40 products in our database that contain both supplements, suggesting they complement each other well.

Key Differences

Vitamin B1

Water-soluble vitamin (thiamine) essential for energy metabolism, nerve function, and carbohydrate processing. Required for production of ATP in cellular mitochondria.

Categories:

Common Forms:

• Thiamine HCl (95% bioavailability)
• Thiamine mononitrate (90% bioavailability)
• Benfotiamine (50% bioavailability)

Vitamin B2

Riboflavin 5-Phosphate, the active vitamin B2 form, supports energy metabolism, maintains healthy skin, and protects against oxidative stress. It aids red blood cell production and prevents migraines. Found in dairy, eggs, and supplements.

Categories:

Common Forms:

• Riboflavin (90% bioavailability)
• Riboflavin 5' Phosphate (80% bioavailability)
• Riboflavin 5-Phosphate (80% bioavailability)

Products Containing Both Vitamin B1 and Vitamin B2

We found 12 products that combine both supplements:

Vitamin Code Raw B-Complex

Garden of Life

$19.19Score: 87/100

Transparent Labs Multivitamin

Transparent Labs

$44.99Score: 87/100

Multi for Her 50+ Tablets

Nature Made

$12.99Score: 86/100

Essential Capsules

Blueprint

Score: 86/100

Multi for Him 50+ Tablets

Nature Made

$12.99Score: 86/100

Multi for Him Tablets

Nature Made

$11.49Score: 86/100

Happy - Bonne Humeur

Raptor Nutrition

$24Score: 86/100

Prenatal Multi + DHA Softgels

Nature Made

$22.99Score: 86/100

Iron+

Momentous

$14.97Score: 86/100

Essential Multivitamin

Momentous

$39.95Score: 86/100

Elite Multivitamin

Gorilla Mind

$44.99Score: 85/100

Daily Multi Vitamins & Minerals

Kirkland Signature

$12.99Score: 85/100

Frequently Asked Questions

What is the difference between Vitamin B1 and Vitamin B2?

Vitamin B1 and Vitamin B2 are both important supplements with distinct properties. Vitamin B1 Water-soluble vitamin (thiamine) essential for energy metabolism, nerve function, and carbohydrate processing. Required for production of ATP in cellular mitochondria., while Vitamin B2 Riboflavin 5-Phosphate, the active vitamin B2 form, supports energy metabolism, maintains healthy skin, and protects against oxidative stress. It aids red blood cell production and prevents migraines. Found in dairy, eggs, and supplements..

Can I take Vitamin B1 and Vitamin B2 together?

Based on our analysis of 40 products that contain both, yes, Vitamin B1 and Vitamin B2 can typically be taken together. However, always consult with a healthcare provider before combining supplements.

Which is more popular: Vitamin B1 or Vitamin B2?

In our database of 564 products, Vitamin B1 appears in 44 products, while Vitamin B2 appears in 44 products.

Related Comparisons & Products

What is Vitamin B1?What is Vitamin B2?Vitamin B6 vs Vitamin B2 Zinc vs Vitamin B2 Vitamin D vs Vitamin B2 Transparent Labs Multivitamin (contains both)Vitamin Code Raw B-Complex (contains both)Happy - Bonne Humeur (contains both)

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.