A nurse is providing discharge instructions to a client who has been prescribed Lithium for bipolar disorder. Which of the following statements by the client indicates a need for further teaching?

"I should maintain a consistent sodium intake in my diet."

"I should have regular blood tests to monitor my lithium levels."

"It's important to restrict my fluid intake while taking this medication."

"I need to report any signs of nausea, vomiting, or diarrhea to my doctor."