I am planning to try NCD and have been doing research on it. First, it is supposed to be very dehydrating and you are supposed to drink A LOT of water when taking it. I don't know if you have. How many drops did you take? My dentist said to start with 3 drops once per day, then three twice, three times, etc. and then work my way up to 10 drops 3 times a day over a period of a month or so. On a NCD forum, they said if you are very sensitive (which I am), you should start with only one or two drops and then slowly work your way up. If you began with more than that, your symptoms may have been a detox reaction, from what they say on the yahoo NCD forum, and you would need to start with less. Hope this helps.