If I remember correctly, we used to give our cat various vitamins and supplements. However, we had to conceal them in her food. Otherwise, she would refuse to eat them. If she did find them, then she tended to spit them out or leave them at the side. When we wanted to give her "oil" based supplements (such as cod liver oil) then we would burst the capsule and drain the oil over her food. For pills and tablets, we tended to either wrap or bury them in other foods. For example, we would put down one layer of her food, place the pill on top and then put the rest on top. Some of the pills were sufficiently small that they could just be "pushed" into a piece of food so that she would eat both at the same time. For the larger tablets, we sometimes split them or ground them up so that she would take them. These tricks were not always successful though and occasionally we would need to place the pill several times before it was eaten. I am not sure why she did not like the pills. However, I suspect that because they had very little smell, were small and hard that she probably thought they were stones.
