Pharmacology A 500-mg dose of a drug has therapeutic efficacy for 6 h. If the half- life of the drug is 8 h, for how long would a 1gm dose be effective A 12 hrs B 14 hrs C 16 hrs D 24 hrs 💡 Explanation A 500-mg dose of a drug has therapeutic efficacy for 6 h. If the half- life of the drug is 8 h, for how long would a 1gm dose be effective ✓ Correct Answer: B. 14 hrs