A prescription for methotrexate 2.5 mg tablets has the directions "Take 4 tablets by mouth once weekly." If the pharmacy dispenses 24 tablets, what is the days supply?
- 6 days
- 24 days
- 42 days (correct answer)
- 168 days
Explanation: The patient takes 4 tablets per dose, and each dose is taken once a week. First, determine how many weekly doses are dispensed: . Since each dose covers one week, the supply will last for 6 weeks. To find the days supply, convert weeks to days: .