Pharmacology Which of the following anti-HIV drug should never be given as rechallenge once a history of producing allergic reaction with the drug is known A Lamivudine B Abacavir C Zidovudine D Nelfinavir 💡 Explanation Which of the following anti-HIV drug should never be given as rechallenge once a history of producing allergic reaction with the drug is known ✓ Correct Answer: B. Abacavir