My mother has had PD for around seven years. One of the problems that she has developed in the last six months (besides nausea) is a bad taste in the mouth with almost any food or drink (including water). She has had her gall bladder checked several times and no problems were found. She thinks it is related to PD or the sinemet that she takes. Has anybody had any experiences related to this symptom and any possible solutions? Thanks. Bryce Jones