Deductions & credits

Yup, I have a letter from my son's doctor, a spreadsheet with all of the gluten-free food, a comparable gluten containing food, a calculation for the additional cost, and receipts for every single purchase. My question is which section in Turbo Tax should this number get entered? I know it's under Medical Expenses, but medical expenses are broken down into the categories. Which category would the food cost go under?