Home ยป Which of the Following Vitamins Function as Both a Visual Pigment as Well as a Hormone? Vitamins MCQs Which of the Following Vitamins Function as Both a Visual Pigment as Well as a Hormone? January 26, 2022 2 Views Q. Which of the Following Vitamins Function as Both a Visual Pigment as Well as a Hormone? A. Thiamine B. Folic acid C. Riboflavin D. Retinal Answer: Retinal