Mestinon is Mestinon or pyridostigmine bromide is an acetylcholinesterase inhibitor that prevents the acetylcholinesterase enzyme from breaking down a neurotransmitter called acetylcholine. Mestinon is also classified as a parasympathomimetic – a drug that enhances parasympathetic nervous system activity. Mestinon also is able to enhance the production of other neurotransmitters such … Continue reading Mestinon for Chronic Fatigue Syndrome (ME/CFS), Fibromyalgia, POTS, and Long COVID