Anticholinesterases are ineffective against: (A) Belladonna poisoning, (B) Carbamate poisoning, (C) Postoperative ileus, (D) Cobra bite
Answer is B. Refer katzung 11/e p 106,107 Anticholinergic drugs block the action of a neurotransmitter called acetylcholine. This inhibits nerve impulses responsible for involuntary muscle movements and various bodily functions. These drugs can treat a variety of conditions, from overactive bladder to chronic obstructive pulmonary disorder. These are ineffective against carbamate poisoning