Name

amyl nitrate

Class

vasodilator

Description

Amyl nitrate is chemically related to nitroglycerin and has been used for many years to treat angina pectoris. It is also effective in the emergency management of cyanide poisoning by causing the oxidation of hemoglobin to the compound methemoglobin. Methemoglogbin reacts with the cyanide ion to form cyanomethemoglogin, which has less affinity for oxygen, thus freeing hemoglogin to react with oxygen.

Onset

30 seconds inhaled

Duration

3-20 minutes

Indications

Cyanide poisoning

May be used in the treatment of symptomatic angina pectoris.

Contraindications

None when used for cyanide poisoning.

Use caution when treating poisoning with a combination of cyanide and carbon monoxide.

Adverse Reactions

Hypotension, tachycardia, palpitations, syncope, headache, nausea

Drug Interactions

None significant

Supplied

0.3 ml/glass ampule (capsule covered with woven gauze).

Dose/Administration

Adult

Glass ampule should be broken and inhaled for 30-60 seconds. Repeat as necessary

Pediatric

same as adult

Special Consideration

Pregnancy Safety: Category C

Frequently abused (claimed to be an aphrodisiac)

Also known as "amy"

Cyanide poisoning often produces a bitter almond breath ordor ( not all persons can detect the odor).

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