Drug - Antidote Acetaminophen - Acetylcysteine (Mucomyst) Benzodiazepine - Flumazenil (Romazicon) Malignant Hyperthermia - Dantrolene (Muscle relaxant) Succinylcholine (NMBD) - Dantrium (Muscle relaxant) Dobutamine (Dobutrex) - Phentolamine (Regitine) (Antihypertensive) Cholinergic Crisis - Epinephrine Opioids - Narcan Warfarin - Vitamin K Heparin - Protamin Sulfate Atropine - Cholinergics Physostigmine - Atropine Kayexalate - Potassium Phentolamine (Regitine) - Adrenergic drugs