Pharmacology Neostigmine antagonizes non-depolarizing blockade by all of the following mechanisms except. A Decreasing the breakdown of acetylcholine at the motor end plate B Preventing the K+ efflux from the cell C Increasing the release of acetylcholine at the motor end plate D Depolarization at the motor end plate 💡 Explanation Neostigmine antagonizes non-depolarizing blockade by all of the following mechanisms except. ✓ Correct Answer: B. Preventing the K+ efflux from the cell