On question 4198 the Rov mentioned that for one taking medicine pills during Pesach, making them not tasty by adding drops of vinegar, would not make any difference. If one is able to wrap them in a piece of thin tissue would that help? If that is difficult for most to swallow, would wrapping them in salad leaves or placing them inside a fruit like a grape, be any better?

Horav Shlomo Miller’s Shlit’a opinion is that it is usually not needed, since pills are Kitniyos and as mentioned, they are as is permitted for the ill. Nevertheless, if one wants to be stringent, as many do regarding Pesach, if one is able to use very thin paper or any other non-edible materials, it would be meaningful. However, food cannot be used as a separating substance, since it becomes Batel or annulled to the pills themselves.