Best for noob would be nitrous in my opinion, its 10 minutes and not even a quickhit. lots of good effects too

I would definatly try this dose lol

Talking about losing weight and tips for it is kinda off subject isn't it? However, a dose that makes the user make it easier to gain weight would be tricky, would it make them gain fat or muscle? Either way, I would use it lol. I need to gain weight xD

This idea is awesome xD

Like a dose that would make you sleep for a long time? I think insomniac would do that.