Question

which of the following is the correct days supply for a prescription with these directions? ii tab po tid #42 7 days 21 days 14 days

Explanation:

Step1: Understand the prescription directions

"ii tab po tid #42" means take 2 tablets (ii tab) by mouth (po) three times a day (tid), and there are 42 tablets in total (#42).

Step2: Calculate daily dosage

Daily dosage = number of tablets per dose × number of doses per day. So, 2 tablets/dose × 3 doses/day = 6 tablets/day.

Step3: Calculate days' supply

Days' supply = total number of tablets ÷ daily dosage. So, 42 tablets ÷ 6 tablets/day = 7 days? Wait, no, wait. Wait, 2 tablets per dose, 3 times a day: 23=6 per day. 42 divided by 6 is 7? But wait, maybe I made a mistake. Wait, no, let's check again. Wait, "ii tab" is 2 tablets, "tid" is three times a day. So daily dose is 23=6. Total tablets 42. 42/6=7. But wait, the options have 7, 21, 14. Wait, maybe I misread. Wait, maybe "ii tab" is 2 tablets, but maybe the total is 42. Wait, 42 divided by (23) = 42/6=7. So the days' supply is 7 days? Wait, but let me check again. Wait, maybe the directions are different. Wait, "ii tab po tid" means 2 tablets, orally, three times a day. So per day: 23=6. Total tablets 42. 42/6=7. So the correct answer should be 7 days? Wait, but the first option is 7 days. Wait, but maybe I made a mistake. Wait, no, let's recalculate. 2 tablets per dose, 3 doses a day: 2*3=6. 42 divided by 6 is 7. So days' supply is 7.

Wait, but maybe the total is 42, so 42/(2*3)=7. So the answer is 7 days.

Answer:

7 days