Vitamin B1 (Thiamine) vs Vitamin B12 (Cobalamin)
Both are commonly considered for energy, brain health, and heart health. Here is how they compare and how to choose.
How to choose
Choose Vitamin B1 (Thiamine) if your focus is energy, brain health, and heart health. Choose Vitamin B12 (Cobalamin) if you care more about pregnancy. Both are reasonable options for energy, brain health, and heart health.
Can you take them together?
Vitamin B1 (Thiamine) and Vitamin B12 (Cobalamin) have no notable direct interaction, so they can generally be taken in the same routine. They are compared here because they are often considered for the same goals.
Where to buy Vitamin B1 (Thiamine) or Vitamin B12 (Cobalamin)
Whichever you choose, pick a third-party-tested brand in the form each supplement's page recommends.
Some links below are affiliate links: if you buy through them we may earn a small commission at no extra cost to you. It never changes our ratings or evidence grades.
Vitamin B1
Vitamin B12
Frequently asked
What is the difference between Vitamin B1 (Thiamine) and Vitamin B12 (Cobalamin)?
Vitamin B1 (Thiamine) is the energy metabolism cofactor that keeps nerves and muscles firing. Vitamin B12 (Cobalamin) is the methylation and nerve-health vitamin that protects the brain and blood.
Should I take Vitamin B1 (Thiamine) or Vitamin B12 (Cobalamin)?
Choose Vitamin B1 (Thiamine) if your focus is energy, brain health, and heart health. Choose Vitamin B12 (Cobalamin) if you care more about pregnancy. Both are reasonable options for energy, brain health, and heart health.
Can I take Vitamin B1 (Thiamine) and Vitamin B12 (Cobalamin) together?
Vitamin B1 (Thiamine) and Vitamin B12 (Cobalamin) have no notable direct interaction, so they can generally be taken in the same routine. They are compared here because they are often considered for the same goals.