Sometimes zymaxid is used to treat bacterial conjunctivitis or pink eye. A generic version of zymaxid may be available in the future, Allergan, the makers of zymaxid, will lose their patent in 2016 and then the active ingredient called gatifloxacin would be the generic equivalent eye drops. Read more about generic zymaxid drops.
The longer answer is that vitamins, especially the B vitamins (thiamine, riboflavin, niacin, pantothenic acid, Vitamin B6, biotin, and folic acid) do contribute to energy metabolism, by helping your body turn carbohydrates, proteins, and fats into utilizable energy.
Each B Vitamin has a specific function within the metabolic process. Vitamin B1 - Vitamin B1 is also known as Thiamine. Thiamine is essential in healthy brain function and as well as metabolism of carbohydrates. Thiamine deficiencies can cause a disease called Beriberi, which is a disease of the nerve and heart.