Which observation indicates that a client is following the medication plan for a tricyclic antidepressant?

The observation that indicates a client is following the medication plan for a tricyclic antidepressant is arriving at the clinic neat and appropriate in appearance. This behavior often suggests that the individual is taking care of themselves and is likely experiencing some improvement in their mood and overall functioning, which is a goal of tricyclic antidepressant therapy.

Tricyclic antidepressants are typically prescribed to help alleviate symptoms of depression, which can include low energy, lack of motivation, and changes in personal grooming or hygiene. When a client arrives at the clinic looking neat and appropriate, it may reflect an improvement in these depressive symptoms, indicating that the medication is having a positive effect.

In contrast, the other observations do not reflect adherence to the treatment plan or improvement in the client's condition. Reporting not going to work, excessive sleeping, or feeling incapable of doing anything are all potential signs of continuing depressive symptoms. These behaviors might suggest that the medication is not adequately addressing the client’s mental health needs or that the client may not be following the prescribed plan effectively.