Hi Gloria,
Well, actually, I never did feel bad, the only symptom I had was dry mouth, but that's what tipped me off, and caused me to check my blood pressure. Actually, this started yesterday, after lunch, and that's when I started monitoring my BP. I don't recall ever having that dry mouth problem before, except on one occasion, (unless, of course, I'm actually dehydrated, and simply need to drink water). That occasion was when I had the TIA, last July. Even though all sorts of thoughts were running through my mind on that morning, I kept noticing that I had dry-mouth. As you may recall, when I arrived at the ER that day, my systolic blood pressure was a little over 180.

It slowly receded later in the day, but the next day, when I went by my GP to discuss the TIA thing, my BP was back up to 180 again. My right arm, and the right side of my face, (right down to the right side of my tongue), was numb. My right leg seemed to be spared. The ER crew couldn't find anything wrong, but since they couldn't rule it out, they called it a TIA, by default. Over the next day or two, most of the symptoms slowly went away, except that it took over a week for the right side of my face to return almost to normal. The corner of my mouth never did quite return to normal. I have normal muscle control, but it always feels slightly numb.
Yesterday afternoon, when I checked it, I discovered that my systolic BP was running from a minimum of 165 to a maximum of 179, and my diastolic pressure was running from about 94 to 100. One time my diastolic reading was 102, and I almost caved in and went to the ER, but it slowly backed off a little so I toughed it out, all the while searching for an explanation. Naturally, I suspected the rasagiline, since there are all sorts of warnings about possible life-threatening BP excursions, if foods high in tyramine, (dried meat, dried fruits, aged cheeses, etc.), are ingested while taking rasagiline. The neuro even warned me about that possibility, however, he didn't mention any other risks. I checked PubMed, and found research that demonstrated that there was no increased risk of an adverse BP event, due to eating an unrestricted diet, so I kind of relaxed, and decided that rasagiline was a relatively safe drug. I hadn't eaten any of those foods recently, though, so I didn't see any reason to suspect food.
http://hyper.ahajournals.org/cgi/conten ... t/52/3/587
To shorten a long story, after running down all sorts of possibilities, yesterday, and finding nothing significant, I decided to check out the antihistamine that I took yesterday morning, (and the day before), to prevent hay fever symptoms from the extremely high level of cedar pollen that we've been having for the past few days. Bingo! Drugs.com shows a list of 625 drugs which are contraindicated with rasagaline, (Azilect).

(Are there any that aren't on the list?)
http://www.drugs.com/drug-interactions/rasagiline.html
Why didn't my neuro doc mention this? I'm not surprised that my GP wasn't aware of the risk, because he candidly admitted right off the bat, that he was completely unfamiliar with rasagiline. I wondered why I had never searched for that possibility, before, but, of course, Parkinson's adversely affects memory, also.
A page from the University of Michigan Health System even has this specific warning against the use of acetaminophen, chlorpheniramine, and dextromethorphan:
Do not take this medication if you have used an MAO inhibitor such as isocarboxazid (Marplan), phenelzine (Nardil), rasagiline (Azilect), selegiline (Eldepryl, Emsam), or tranylcypromine (Parnate) within the past 14 days. Serious, life-threatening side effects can occur if you take dextromethorphan before the MAO inhibitor has cleared from your body.
http://health.med.umich.edu/healthconte ... ype=Multum
Acetaminophen, of course is used in Tylenol, and many other combination painkillers. Chlorpheniramine was in the antihistamine that I took, (Chlor-Tripolon), and dextromethorphan is a decongestant, commonly used in OTC cough syrups, and similar meds, (though I haven't used any of that lately, thankfully). All antihistamines are on the list, and virtually all anti-depression meds.
What am I doing taking this stuff? Of course, I'm not taking it any longer, but according to the references, it will take 14 days to completely clear my system. I'm not taking any more antihistamines, either, at least not for 13 more days - I'll just put up with the watery eyes, runny nose, and throat congestion, until the rasagiline is completely depleated.
This morning, when I checked my BP, it was 148 over 88, much better than it had been when I went to bed, so I breathed a sigh of relief and drank a Dr. Pepper, in place of a cup of coffee. 30 minutes later, I checked my BP, and it was 158 over 94. I checked the drug list, and sure enough, caffeine is on there, (but only as a moderate interaction). 30 minutes later, the reading was 169 over 112. That's when I headed to the ER, since I've read where a diastolic BP reading of 100, is suggested as a threshold for deciding when to go to the ER. It took me 30 minutes to get there, and about 15 minutes later, when they got me hooked up to the monitors, and checked my BP, it was 225 over 121. It slowly came down, and within about an hour, the systolic reading was down to 160, and the diastolic reading was 90-something, but then it began to go up again, and when I checked out, if I recall correctly, the last reading showed 177 or 178 over 102. It's been up and down, since I got home. A few hours ago, it was down to 151 over 94. Then it went back up to 176 over 102. Right now it's 172/104.
When I first started taking the Azilect, my BP was mostly in the range of 120 to 130 over 70-something. A couple of weeks later, it was in the 110 to 120 over 60-something range. A month or so later, it was back up into the 120 to 130 range, with occasional 140s, (probably when I started occasionally taking an antihistamine, because of ragweed pollen, but I didn't take careful notes, unfortunately). There were also occasional readings below 120, so I decided it was doing OK, and I pretty much stopped checking it regularly.
Of course, I wasn't taking Azalect when I had the TIA, but my pressures were not as high, then, and they settled down much faster. To add insult to injury, Parkinson's disease messes with your blood pressure, too, but usually it causes hypotension, not hypertension. I have a feeling that it's the combination of drugs that's causing the worst part of the problem right now, but who knows? Whatever is going on seems to be serious stuff.
All my electrolytes, EKG, etc., checked out fine, at the ER. In view of the rather high pressure readings, the ER doc couldn't believe that the only symptom I had was dry-mouth. As far as resolving the problem is concerned, he was no help at all, and played down the possibility of drug interaction. He tried to convince me that I simply have chronic high blood pressure. I guess I'll see what happens over the next 13 days, as the rasagiline slowly exits my body.
I reckon I'll check with my GP tomorrow, but I'm pretty sure that he'll just prescribe another drug - for lowering blood pressure, since he doesn't know anything about rasagiline.
Anyway, that's the story as best I can tell.
Tex
P. S. Yes, Rosie, I remember you trying to talk me out of taking this stuff. I just wish that one of us would have come across some of these red flags, at the time.
