Pharmacology The basis of combining ritonavir with lopinavir : A Pharmaceutical compatibility B CYP3A4 inhibition by ritonavir C Long elimination half life of ritonavir D Ability to counteract side–effects of lopinavir 💡 Explanation The basis of combining ritonavir with lopinavir : ✓ Correct Answer: B. CYP3A4 inhibition by ritonavir