Vitamin B1 (thiamine)
Vitamin B2 (riboflavin)
Vitamin B3 (niacin or niacinamide)
Vitamin B4 (adenine)
Vitamin B5 (pantothenic acid)
Vitamin B6 (pyridoxine, pyridoxal, or pyridoxamine, or pyridoxine hydrochloride)
Vitamin B7 (biotin)
Vitamin B8 (Iadenosine monophosphate, or alternately myo-inositol)
Vitamin B9 (folic acid)
Vitamin B10 (Pteroylmonoglutamic acid)
Vitamin B11 (Salicylic acid)
Vitamin B12 (various cobalamins; commonly cyanocobalamin in vitamin supplements)
Vitamin B13 (orotic acid)
Vitamin B14 (metabolite of xanthopterin)
Vitamin B15 (Pangamic acid, also called pangamate)
Vitamin B16 (Dimethylglycine)
Vitamin B17 (Amygdalin)
Vitamin B18
Vitamin B19
Vitamin B20 (Carnitine)
Vitamin B21

Vitamin Bh – another name for (biotin)
Vitamin Bm ("mouse factor") – also used to designate Inositol
Vitamin Bp (Choline) –
Vitamin Bt (L-carnitine) –
Vitamin Bv – a type of B6 but not Pyrodoxine
Vitamin Bw – a type of Biotin but not d-Biotin
Vitamin Bx – another name for PABA (para-Aminobenzoic acid)

All B vitamins are water soluble, and are dispersed throughout the body and must be replenished daily with any excess excreted in the ***** (which turns a bright yellow color).