Correct Answer: C

Rationale: Lithium is primarily used to stabilize mood, especially in conditions like bipolar disorder. It helps in reducing the frequency and severity of manic episodes, making it an essential medication for mood stabilization.

Correct Answer: C

Rationale: Lithium is primarily used to stabilize mood, especially in conditions like bipolar disorder. It helps in reducing the frequency and severity of manic episodes, making it an essential medication for mood stabilization.

Correct Answer: B

Rationale: Grapefruit juice affects carbamazepine metabolism and should be avoided. It can lead to increased levels of the medication, potentially causing toxicity. Monitoring carbamazepine blood levels and the complete blood count (CBC) is essential to ensure the medication's efficacy and safety. Carbamazepine can cause serious adverse effects like Stevens-Johnson syndrome, which can be life-threatening. Therefore, the client should promptly report any rash to the healthcare provider. Additionally, the client should be educated about potential central nervous system (CNS) side effects such as drowsiness or dizziness, and advised to avoid activities requiring alertness until these effects diminish.

Correct Answer: D

Rationale: The correct instruction for the client who has a new prescription for Levothyroxine to treat hypothyroidism is not to discontinue the medication without consulting the provider. Abrupt cessation could lead to the return of hypothyroid symptoms, emphasizing the importance of medical guidance when considering any changes to the treatment plan.

Correct Answer: A

Rationale: Caffeine can increase the risk of theophylline toxicity as it competes for the same metabolic pathways, so clients should avoid consuming caffeine while on theophylline to prevent adverse effects.