Pharmacology Which of the following drugs required a dose adjustment in patient during radiotherapy in order to present radiation toxicity ? A Vincristine B Dactinomycin C Cyclophosphamide D 6-Mercaptopurine 💡 Explanation Which of the following drugs required a dose adjustment in patient during radiotherapy in order to present radiation toxicity ? ✓ Correct Answer: B. Dactinomycin