Pharmacology Adrenaline is added to lignocaine to prolong its effect and decrease its absorption into blood stream in a ratio of : A 1:50,000 B 1:100,000 C 1:200,000 D 1:500,000 💡 Explanation Adrenaline is added to lignocaine to prolong its effect and decrease its absorption into blood stream in a ratio of : ✓ Correct Answer: C. 1:200,000