An older female adult client with myasthenia gravis is concerned about the cost of medications under her Medicare prescription drug plan. She questions the necessity of neostigmine (Prostigmin) and...

An older female adult client with myasthenia gravis is concerned about the cost of medications under her Medicare prescription drug plan. She questions the necessity of neostigmine (Prostigmin) and pyridostigmine (Mestinon). What information is important to provide this client to promote drug compliance following discharge?