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It all depends on your mental state. If you're depressed/anxious about taking it etc. etc. then don't take it. Also if it's your first time take half the tab for a half dose. Try to have a sober trip sitter who knows what they're doing. Also, if the tab is bitter than you got sold a tab that's been cut, and isn't pure. Basically don't take it cuz it can give you a pretty bad trip. Other than that enjoy yourself dude. LSD and Acid can be pretty fun depending on what you want out of it.
tl;dr
don't be a dumbass