I came across this Japanese tv commercial. Video and transcript are given below.



My question is: what's the meaning of 最初にこれ飲んどけって…ありますか? I think the key is to break down 飲んどけ but I don't know how this comes about. Seems to me it's made from 飲む (past) + どけ, but I can find only どける in dictionary and the combined meaning doesn't make sense.