<prompt> The route of administration of amyl nitrite in cyanide poisoning isIntramuscularIntravenousSubdermalInhalation  <response>: Antidotal Therapy in cyanide poisoning:The 3-step cyanide antidote kit is used. It contains amyl nitrite, sodium nitrite, and sodium thiosulfate.i. 0.3 ml ampoule of amyl nitrite is broken in a gauze and the victim is made to inhale for 30 seconds, every minute 1st step, and use a new ampoule every 3 min. Stop amyl nitrite, if systolic BP is 80 mmHg.ii. 10 ml of 3 solution 300 mg of sodium nitrite is injected IV slowly over 5 min 2nd step, followed by 50 ml of 25 solution 12.5 g of sodium thiosulfate over 10-20 min, by the same needle 3rd step. Ref: Krishnan vij textbook of forensic medicine ; 5th ed; Page no: 548 