N.F.
Crest Whitening Strips that self seal is what I used, but it took 2 weeks rather than 1 because I had to use them every other day due to sensitivity. I too am a coffee drinker and diet everything carbonated :) I just saw an ad about Zoom and haven't done my research on it yet, but just looking at the ad made me say "that'll really hurt afterwards". There are some whitening products available over the counter that now help with sensitivity. I work at a dental clinic and my dentist always suggests over the counter and never use more than 3 days in a row straight. Call and ask your dentist what they think... as far as I know, they can't charge you for a phone call lol