A few months ago I started taking Mestinon and almost immediately I started feeling worse. I was chilled, constipated, and completely out of breath all the time. I stopped taking it a few weeks ago, and things are so much better--I had never realized what a luxury it is to be able to breathe deeply, or to hold a conversation without stopping halfway through a sentence to catch my breath. Has anybody else had these problems?
I am so glad to have discovered this thread and did not see the initial post that you wrote back in May. Like you, I also had a horrible experience when I tried Mestinon (back in 2014). I started on a very low dose (1/8th of a 60 mg pill) and it actually gave me respiratory depression where we debated if I should go to the ER to get the antidote (which I believe was Atropine)? Ultimately, it turned around on it's own and my doctor ended up writing in my chart that I was allergic to it so it was never given to me again.
I tried it back in 2014 for POTS, but what is especially odd in my case, is that Mestinon is one of the meds that is often prescribed for LEMS and I have the LEMS (calcium channel) autoantibody so in theory it should have helped me and yet it made me drastically worse. I still don't understand why but it reinforced to me how unique and individual each of us are (since Mestinon is a life-changer for many others).
couldn't think of a better place to post the update on my medication, so here it is! I finally started Midodrine in the late spring/early summer (which means I've been on it for about 7 months), 2.5 mg three times a day.
I am so glad that you updated this thread and I have (successfully) taken Midodrine since 2014 and it is a very helpful medication for me. Like you, I take 2.5 mg 2-3x per day. We played around with my dose for several years and I took as low as 1.25 mg and as high as 5 mg at different times. Are you taking it for POTS or for another reason?
It didn't cause any blood pressure spikes, and I was told it was okay to lie down as long as I propped my head up on pillows.
In my case, I had unbelievably low BP (80/50 every day for several years) and the Midodrine did not raise it very much even though it helped me to breathe better. My (former) Cardio and my main doctor told me that it was 100% okay for me to lie flat after taking Midodrine (without being propped up with pillows) b/c it was clear in my case that it was not raising my BP. But in general, the standard protocol is NOT to do that.
It was odd that Midodrine was improving my breathing, in the absence of raising my BP on an arm-cuff, but my doctors felt that it was raising my core BP and bringing more blood and oxygen to my lungs through preferential perfusion, even in the absence of raising my BP on an arm-cuff. I have no way to prove this though! Midodrine and Atenolol (while very helpful for me) were more like band-aids for symptom reduction until I found the proper treatments that got to the underlying issue.
The strange thing is that, in spite of feeling awful, on most days I am able to exercise using a recumbent bicycle (per Dr. Systrom's advice). I have gone from 5 minutes to up to 20 minutes depending on how I feel.
Wow, this is amazing! I want to make sure I understood though, do you mean that you feel awful in general or that you specifically feel awful after you use the recumbent exercise bike? Do you think that you might be overdoing it?
I have not attempted to use a recumbent bike but I have been able to build up the time that I am able to walk (on a flat surface) from a few steps to a few minutes to now it is unlimited. I can walk for hours (if needed) and yet I can still only climb a maximum of about 5-6 stairs. And no idea about the recumbent bike.
It seems like the medicine and exercise is doing something, though. I had an exercise test yesterday, and the numbers were different from 6 months ago. My peak V02 went from 78% of predicted to 93% of predicted, and my VE/VCO2 slope went from severely abnormal to merely borderline abnormal! I still don't completely understand what these numbers mean, but I do get that my body is using oxygen more efficiently and my heart is doing a better job of filling up and pumping.
This is an amazing improvement that is measurable and cannot be due to chance or any other confounding factor! Was this a CPET test? I have never done a CPET test but in my case, I was unable to pass a basic spirometry (pulmonary function test) to save my life prior to my treatments (IVIG and Rituximab) and now I can pass one. I was getting scores showing pulmonary restriction at anywhere from 66% to 74% of predicted. And now I can pass the test. The last time I did a spirometry test was well over a year ago and I am wondering what my scores would be now if I were to try it again?
It's strange that my numbers have improved so dramatically, but my daily functioning hasn't changed.
What did your doctor say about this? I am not sure what to make of it either and in my case, when my spirometry scores improved, my daily functioning had also improved.
For two weeks I'll take 5 mg in the morning, and then 2.5 mg at lunchtime and in the evening. If there are no ill effects after a few weeks, I can then take 5 mg for my lunchtime dose, and if that goes well after a few weeks I can take 5mg for all three doses. Fingers crossed...we'll see how this works.
Please keep us posted and I am very curious to hear how you do on the 5 mg. I ultimately did better with 2.5 mg of Midodrine but this means nothing and we are all so different. Fingers crossed for you.