Vitamin B1 vs Vitamin K

TL;DR

Quick comparison: Vitamin B1 and Vitamin K have 0 overlapping categories and appear together in 13 products.

•Choose Vitamin B1 if: Water-soluble vitamin (thiamine) essential for energy metabolism, nerve function...
•Choose Vitamin K if: Fat-soluble vitamin essential for blood clotting and bone metabolism. K1 from pl...
•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 K
Type	vitamin	vitamin
Common Dosage	1.1-1.2 mg daily	90-120 mcg daily
Best Bioavailability	Thiamine HCl (95%)	MK-7 (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 K

Typevitamin

Common Dosage90-120 mcg daily

Best BioavailabilityMK-7 (90%)

Categories0

Available Products0

Can You Take Both?

Yes, Vitamin B1 and Vitamin K can typically be taken together. In fact, we found 13 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 K

Fat-soluble vitamin essential for blood clotting and bone metabolism. K1 from plants and K2 from bacteria and fermented foods.

Categories:

Common Forms:

• MK-7 (90% bioavailability)
• MK-9 (85% bioavailability)
• MK-4 (75% bioavailability)

Products Containing Both Vitamin B1 and Vitamin K

We found 12 products that combine both supplements:

Transparent Labs Multivitamin

Transparent Labs

$44.99Score: 87/100

Prenatal Multi + DHA Softgels

Nature Made

$22.99Score: 86/100

Essential Multivitamin

Momentous

$39.95Score: 86/100

Multi for Her 50+ Tablets

Nature Made

$12.99Score: 86/100

Multi for Him Tablets

Nature Made

$11.49Score: 86/100

Multi for Him 50+ Tablets

Nature Made

$12.99Score: 86/100

Daily Multi Vitamins & Minerals

Kirkland Signature

$12.99Score: 85/100

Elite Multivitamin

Gorilla Mind

$44.99Score: 85/100

Multi for Her Tablets

Nature Made

$12.49Score: 84/100

Multivitamin Complete Tablets with Iron

Nature Made

$9.99Score: 83/100

ELEMENTS - Multivitamines & Mineraux

Raptor Nutrition

$28Score: 76/100

Daily Multivitamin for Women

Bloom Nutrition

$24.99Score: 54/100

Frequently Asked Questions

What is the difference between Vitamin B1 and Vitamin K?

Vitamin B1 and Vitamin K 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 K Fat-soluble vitamin essential for blood clotting and bone metabolism. K1 from plants and K2 from bacteria and fermented foods..

Can I take Vitamin B1 and Vitamin K together?

Based on our analysis of 13 products that contain both, yes, Vitamin B1 and Vitamin K can typically be taken together. However, always consult with a healthcare provider before combining supplements.

Which is more popular: Vitamin B1 or Vitamin K?

In our database of 564 products, Vitamin B1 appears in 44 products, while Vitamin K appears in 20 products.

Related Comparisons & Products

What is Vitamin B1?What is Vitamin K?Vitamin E vs Vitamin K Manganese vs Vitamin K Selenium vs Vitamin K Transparent Labs Multivitamin (contains both)Essential Multivitamin (contains both)Multi for Him Tablets (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.