What happens after four to five hours when drinking ultimate gold detox?

Ultimate Gold is a scam, like most of these sorts of "treatments." You can accomplish the same thing by following their directions on the web site, but using plain water or tea. The object is to so dilute your urine that any drug residue or metabolites will drop below the detectable limits. Sometimes it works, and sometimes it doesn't.

After the 4 to 5 hours, when your fluid balance gets back to normal, the chemicals will still be there. The term detox is a total scam as well.