Yesterday I bought a $20 e-cig kit at a local tobacco shop to see if vaping would work for me. I loved it immediately! Its very tiny and seems quite powerful. BUT I got a horrible sore throat, cough and headache which has not gone away. Maybe I'm allergic to something in the juice? It's 100% PG and has some real scary sounding stuff in it, like ethanol. Iis this what vaping is like until you're used to it? You can't refill these cartomizers so I can't try other e-liquid with it. Can I put another brand cartomizer on it or could that make it explode? If you want to look at the specs, their web site is www.revo-lution.com