The nurse has given a client information about the use of nitroglycerin sublingual tablets. the client has a prescription for prn use if chest pain occurs. which client statement indicates an understanding of this medication?
1. "it's best to keep this medication in a shirt pocket close to the body."
2. "i need to discard unused tablets 6 to 9 months after the bottle is opened."
3. "i will avoid using the medication until the chest pain actually begins and gets worse."
4. "i can take aspirin for any headache that occurs when i first start taking the nitroglycerin."