Meditation side effects no appetite

So I am on a Medication that the side effect is a loss of appetite. I have lost weight being on it. The problem I am finding as I becoming more involved in working out its not healthy not eating for long periods of time and when the medication wears off I am starving and over eating in the evening. I tried eating smaller light meals but I forget to eat what I prepacked because I am not hungry. Is their any shakes, or blended recipes anyone would recommend so I am maintaining a healthy life style and not doing damage to my body?