A nurse is caring for a client with myasthenia gravis who has been prescribed pyridostigmine. Which nursing intervention is most important to include in the care plan for this client?

Monitor for signs of cholinergic crisis, such as excessive salivation and muscle twitching.

Advise the client to discontinue the medication once they experience increased muscle strength.

Encourage the client to take the medication on an empty stomach to enhance absorption.

Teach the client to self-administer pyridostigmine via intramuscular injection.