I have started on medication some two months ago and strict adherance to a regime relating to times of medicating and diet has been stressed as being "of vital importance" for these to be effective. In the two months it has happened three to four times that I have been sick and vomitted within 30 to 40 minutes after medicating. I have been advised not to re-take a dose (as not to over-dose) unless I see undisolved tablets within the vomit. This has never happened but still, I doubt medicines have been fully and properly disolved into the bloodstream within 30 to 40 minutes. I am now so concerned that I have missed dosages. Does anyone have any ideas? Should I be concerned or am I needlessly paranoid. Of course I will discuss this with my Dr. but I would like to prepare myself with some views of others.