I'll tell ya right now what the F. it is. Some of these inhalers contain methamphetamine, it says so right on the label, just misspelled a little...

However... it is an INACTIVE isomer, the 'l' or 'levo' meth molecule which does NOT get you high, and there is NO practical way to convert it to the active version either.

As to whether or not it's addictive, I don't know, having never tried using it habitually.

And that's the proven a thousand times over truth about vicks inhalers.