A nurse is preparing to administer lithium 450 mg PO daily. Available is lithium 300 mg capsules. How many capsules should the nurse administer? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)

Step 1: Use the formula Number of capsules = Desired dose ÷ Dose available Step 2: Insert known values Desired dose = 450 mg Dose available = 300 mg Number of capsules = 450 ÷ 300 Number of capsules = 1.5 Step 3: Round to the nearest tenth 1.5 → 1.5 capsules Final Answer: 1.5 capsules