Mestinon is used to treat Myasthenia Gravis. The generic version is called Pyridostigmine bromide. The average Mestinon cash price is about $79.97 for a supply of Syrup 60 MG/5ML 30 pcs. You can reduce your Mestinon cost by up to 75% with our free Mestinon discount card. Bring it to a participating pharmacy near you to save on your prescription medication.