• Vitamin B₁ (thiamine)
• Vitamin B₂ (riboflavin)
• Vitamin B₃ (niacin or niacinamide)
• Vitamin B₅ (pantothenic acid)
• Vitamin B₆ (pyridoxine, pyridoxal, or pyridoxamine, or pyridoxine hydrochloride)
• Vitamin B₇ (biotin)
• Vitamin B₉ (folic acid)
• Vitamin B₁₂ (various cobalamins; commonly cyanocobalamin in vitamin supplements)