For the last three days, nothing has tasted good. I have a bad taste in my mouth. Usually I drink Diet Coke and water, but neither taste right. If it were a bad tooth, I would think there would be some discomfort. The only medicine change I have made was to increase the dose of bupropion from 150 mg to 300 mg daily. I started that on February 1st and the brand did not change, matter of fact, I am just doubling dosage from the same bottle.