I found that once I put a cartridge in it didn't seem to do much after a couple hours. It's like the cartridge would dry out and not be very effective. Trying to quit would be very difficult with this inhaler I find that with just trying with the four cartridges I ordered I would be only using it for maybe a day and a half to two days. in order to have enough cartridges to last me long enough to make an impact it would cost me way more than it would to just continue smoking. Not cost-effective in my mind to encourage quitting.