Is there a limit to how much chicken or beef you can safely eat?? NO!! Well unless you eat yourself to DEATH but damn. Same with shakes I do as little as zero and probably as many as 10+ scoops a day depends day to day on protein need, my sched etc.
Just have as many as needed to fill requirements after real food.
Yup being paranoid. Its just protein man eat it.
its powdered FOOD.