DXM is what is found in cough syrup, it's a prescription drug that might do damage.

But if you're looking to keep natural highs, like myself, try and get some "Salvia". It is 100% legal, here in Canada anyways, and feels like a mild mushroom trip for about 20min. You smoke it, and it can be found at most headshops. Here though(Canada), I just saw a news report and Salvia is being discovered now as a "dangerous drug" and now the police are getting word on it, so hurry, it may not be available for much longer.

Magic Mushrooms are all good too. They are 100% harmless is taken in moderation. One of my old buddies g/f did a report on Magic Shrooms in college for some science class, and everything she found about them, their long term and short term effects, proved to be harmless and do little to no damage.

I'd suggest Ayahuasca but you're just asking for trouble.

I've heard nutmeg too, but I've never tried it, nor do I want to. Ask some of the youngens here about it, I know nothing about it, they have experience with it.

And weed of course...good stuff