Not good for you. I took 2 hits of a Lucky Turtle Indica cartridge and received the worst migraine of my life within about 10 seconds. It was like smoking an unknown chemical. After doing some research I found they use Polyethylene Glycol to clean excess plant matter. Polypropylene Glycol is the one that causes wet lung and it’s cousin Polyethylene Glycol isn’t much better for you, if not worse. This company like all others making vape cartridges don’t really know what the affects will be on a human until it’s already too late. When they are told one chemical is bad they just switch it to a different one that does the same thing for them and their extraction. The best concentrates to use (even in a vape pen) would be a naturally extracted water hash or rosin. I personally will not be buying ANY more Lucky Turtle products from risk of getting another migraine and/or being affected negatively affected by them.