Bad Taste

Hi im new here.. :)

ive got this very strange taste in my mouth the best I can decribe is to say it tastes like 'biscuits' its not at all metalic, its got quite bad recently and almost every thing I eat tastes of it,

i was taking vitamin b12 a while ago but this made it far far worse,other than that im not on anyother medication.

Im 29 but have high colesterol and blood pressure, but ive had these for a year or so now, the 'biscuit' taste is only the last few months.

Many thanks.