But really if i had a sick chicken, I wouldn’t be giving apple cider vinegar.. it’s already sick that’s a preventative for staying healthy.. that’s just gonna add to their discomfort cause apple cider vinegar makes the chicken a more acidic environment that worms don’t wanna live in compared to normal.. I give my flock apple cider vinegar 1-2 times a week.. not everyday I’d be giving reg water w/maybe some of the electrolytes they have for chicks. But that’s my opinion. Also giving too many vitamins can make them sick as well. Good luck to you & ur chick!