How did he survive the pills?
He took 4 different prescription medications, no indication what they were, small quantity overall.
If they were just supplements or whatever, anything but painkillers or anti-anxiety, I suppose he'd get a stomach ache and that's all and probably survive.
He vomited a little gastric juice and that's all, so he didn't vomit them out, so that wouldn't have saved him if they were a more serious pill. He wasn't even shown sick afterwards.