negative regulation of vitamin metabolic process +
nucleobase-containing small molecule biosynthetic process +
organic acid biosynthetic process +
positive regulation of vitamin metabolic process +
regulation of vitamin metabolic process +
urate biosynthetic process
vitamin biosynthetic process +
The chemical reactions and pathways resulting in the formation of a vitamin, one of a number of unrelated organic substances that occur in many foods in small amounts and that are necessary in trace amounts for the normal metabolic functioning of the body.