Vitaminoknak
Vitaminoknak is a term that appears to be a misspelling or a non-standard term. It does not correspond to any recognized vitamin, nutrient, or scientific concept in common English usage related to health or nutrition. It is possible that "vitaminoknak" is a word from another language, a typographical error, or a very obscure or newly coined term.
If the intention was to refer to vitamins in general, the correct English term is "vitamins." Vitamins