Pyridostigmine is used to improve muscle strength in patients with a certain muscle disease (myasthenia gravis). It works by preventing the breakdown of a certain natural substance (acetylcholine) in your body. Acetylcholine is needed for normal muscle function. Mestinon or any insulin products (vials, pens, cartridges) are not steroids.
Ensure you let your doctor know of any medications you are currently on, including insulin. Your doctor may be able to prescribe you a particular insulin that is compatible with Mestinon (ie, insulin isophane)
Mestinon is an antagonist to cholinesterase, the enzyme which normally destroys acetylcholine. The action of Mestinon can briefly be described, therefore, as the potentiation of naturally occurring acetylcholine. Mestinon has a more prolonged action than Prostigmin (neostigmine) although it is somewhat slower to take effect (generally taking 30 – 60 minutes). Because it has a weaker “muscarinic” action than Prostigmin, it is usually much better tolerated by myasthenic patients in whom the longer action is also an advantage.
Mestinon is also available in SR