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A member asked:
How long is mestinon (pyridostigmine) active in your system once taken?
A doctor has provided 1 answer
3-6 hours: Hi. For the regular Mestinon (pyridostigmine) (immediate release), the effect generally lasts 3 to 6 hours. For the extended release, it's about 8 to 12 hours. I hope it's helping your MG. Good luck!
Answered 1/7/2015
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