Correct Answer: B

Rationale: Furosemide is a loop diuretic that can lead to hypokalemia (low potassium levels) due to increased excretion of potassium in the urine. To counteract this effect and maintain electrolyte balance, the client should be advised to increase their intake of potassium-rich foods. This instruction helps prevent potential complications associated with low potassium levels.

Correct Answer: A

Rationale: Acetaminophen is known to lose its effectiveness in controlling pain beyond a dosage of 1,000 mg. It is important to adhere to recommended dosages to ensure optimal pain relief and avoid potential adverse effects associated with higher doses.

Correct Answer: C

Rationale: Rinsing the mouth after using inhaled beclomethasone is important to prevent fungal overgrowth in the mouth, a common side effect of corticosteroid inhalers.

Correct Answer: D

Rationale: Regular insulin usually peaks around 1 to 5 hours after administration. This peak time frame is important to consider when managing blood glucose levels and timing meals to coincide with insulin activity.

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.