Hello, I work at a daycare and one of my parents is treating their child s teething with round the clock Tylenol. They give him a dose before he s dropped off, then come on their lunch break and give him another, and more at home. This is concerning for me to keep a child constantly drugged like this. The child is one years old. He doesn t have a fever either. My question is what are the effects this can cause? Serious damage occur?