If it is pure absinthe (clear not green), you will have a good time. Most of the time it is already been deluted with sugar. Which is ok, but not as strong compared to deluting it yourself. If it is pure, you will need to delute it with sugar to drink it. Just look on line, I am sure you will find out how to do it. If you don't it pretty much just makes you sick. Effects depend on the person and how strong it is. Somepeople it has no effect on, but some it can really do some neat head tricks with. Oh yeah, don't expect to remember what happened. You will just wake up a go, What happened?