myasthenia gravis
"Mestinon helps everyone differently. I started out with ocular MG. Apparently, this drug helps most people with their ocular MG, but it doesn't do anything at all to improve my eye. My case of MG rapidly generalized, and difficulty breathing was my 2nd symptom to manifest. Mestinon improves my breathing issues somewhat, but doesn't take the shortness of breath away completely. Same with my arms and thighs; it helps, but doesn't make the weakness disappear altogether. Mestinon can cause diarrhea, but most likely won't if taken alongside a meal or with a small snack. It must be taken every 3-4 hours. Mestinon is one of the only drugs out there for MG with the least amount of unpleasant side effects."