The recipes should not cause any side effects. Please discuss this with your Dr. or a personal RD to see what might be the cause. In the meantime, try another recipe until you can dial into what or if there's a trigger ingredient causing this. One other thing that might be causing it is too much sugar. I'm not familiar with the exact recipe you are using, but if there's a lot of fruit or other high sugar ingredients then that may cause some people to feel shaky.