Pharmacology An example of covalent drug receptor interaction: A Noradrenaline binding to Ξ²1 adrenergic receptor B Acetylcholine binding to muscarinic receptor C Prazosin binding to Ξ±1 adrenergic receptor D Phenoxybenzamine binding to alpha adrenergic receptor π‘ Explanation An example of covalent drug receptor interaction: β Correct Answer: D. Phenoxybenzamine binding to alpha adrenergic receptor