I'm still confused about vitamin B. I understand than it's commonly found in meat products.. What does it mean if it's added into flavored water? Is it still vegan?

Ingredients:
Purified water (reverse osmosis)
Citric Acid
Natural Flavors
Potassium Sorbate
Sodium Benzoate (preservatives)
Sucralose
Absorbic Acid (Vitamin C)
Niacinamide (Vitamin B3)
D-Calcium Pantothenate (Vitamin B5)
Pyridoxine Hydrochloride (Vitamin B6)
Cyancobalamin (Vitamin B12)