Amiphenazole

Analeptic drug used to stimulate respiration

Amiphenazole
Chemical nomenclature
IUPAC name	4,5-Diphenylimidazole
Identifiers
CAS Number	77-07-6

Amiphenazole is a central nervous system stimulant primarily used as an analeptic to stimulate respiration. It is known for its ability to counteract the respiratory depression caused by opioids and other central nervous system depressants.

Pharmacology

Amiphenazole acts on the central nervous system by stimulating the medulla oblongata, which is responsible for controlling respiratory rate. This action helps to increase the depth and rate of breathing, making it useful in situations where respiratory function is compromised.

Medical uses

Amiphenazole is used in clinical settings to:

• Reverse respiratory depression induced by opioid analgesics.
• Treat drug overdose situations where respiratory function is impaired.
• Assist in the recovery of patients from anesthesia by stimulating breathing.

Mechanism of action

The exact mechanism by which amiphenazole stimulates respiration is not fully understood. However, it is believed to enhance the sensitivity of the respiratory centers in the brain to carbon dioxide, thereby increasing respiratory drive.

Side effects

Common side effects of amiphenazole include:

• Nausea
• Vomiting
• Tachycardia
• Hypertension

In some cases, excessive stimulation of the central nervous system can lead to seizures.

History

Amiphenazole was developed in the mid-20th century as a response to the need for effective respiratory stimulants. It was widely used in the past but has seen a decline in use with the development of newer agents.

Related pages

• Analeptic
• Respiratory depression
• Opioid overdose

• 
  Amiphenazole