Question: what is the best vitamin supplement for diabetics?
Answer: ALA and GLA. ALA (alpha-lipoic acid) is a versatile and potent antioxidant, and may function to help diabetic neuropathy and reduce pain from free-radical damage. ... 
Biotin. ... 
Carnitine (L-Carnitine, Acetyl L-Carnitine) ... 
Chromium. ... 
Coenzyme Q10. ... 
Inositol. ... 
Manganese. ... 
Magnesium.