Is it safe to consume detox drink, niacin 500 mg, and antioxidents?

Detox. What is in the detox drink? What antioxidants are you speaking of? People take a lot of concoctions without having any idea what's in them because some advertisement says the stuff is good for you. Rarely is there any proof of their claims. I wouldn't slug down any mistery drink if i didn't know what it was.