Identification
Name Doxapram
Accession Number DB00561 (APRD00935)
Type small molecule
Description A central respiratory stimulant with a brief duration of action. (From Martindale, The Extra Pharmocopoeia, 30th ed, p1225)
Structure
Categories (*)
Molecular Weight 378.5072
Groups approved
Monoisotopic Weight 378.230728214
Pharmacology
Indication For use as a temporary measure in hospitalized patients with acute respiratory insufficiency superimposed on chronic obstructive pulmonary disease.
Mechanism of action Doxapram produces respiratory stimulation mediated through the peripheral carotid chemoreceptors. It is thought to stimulate the carotid body by inhibiting certain potassium channels.
Absorption Not Available
Protein binding Not Available
Biotransformation Not Available
Route of elimination Not Available
Toxicity Intravenous LD50 values in the mouse and rat were approximately 75 mg/kg and in the cat and dog were 40 to 80 mg/kg. Symptoms of overdosage are extensions of the pharmacologic effects of the drug. Excessive pressor effect, tachycardia, skeletal muscle hyperactivity, and enhanced deep tendon reflexes may be early signs of overdosage.
Affected organisms
  • Humans and other mammals
Interactions
Drug Interactions Not Available
Food Interactions Not Available
Potassium channel subfamily K member 3
Name Potassium channel subfamily K member 3
Gene Name KCNK3
Pharmacological action yes
Actions inhibitor
References
  • Yost CS: A new look at the respiratory stimulant doxapram. CNS Drug Rev. 2006 Fall-Winter;12(3-4):236-49. - Pubmed
  • Anderson-Beck R, Wilson L, Brazier S, Hughes IE, Peers C: Doxapram stimulates dopamine release from the intact rat carotid body in vitro. Neurosci Lett. 1995 Feb 24;187(1):25-8. - Pubmed
  • Peers C: Effects of doxapram on ionic currents recorded in isolated type I cells of the neonatal rat carotid body. Brain Res. 1991 Dec 24;568(1-2):116-22. - Pubmed
DTHybrid score 0.8345
Potassium channel subfamily K member 9
Name Potassium channel subfamily K member 9
Gene Name KCNK9
Pharmacological action yes
Actions inhibitor
References
  • Yost CS: A new look at the respiratory stimulant doxapram. CNS Drug Rev. 2006 Fall-Winter;12(3-4):236-49. - Pubmed
  • Anderson-Beck R, Wilson L, Brazier S, Hughes IE, Peers C: Doxapram stimulates dopamine release from the intact rat carotid body in vitro. Neurosci Lett. 1995 Feb 24;187(1):25-8. - Pubmed
  • Peers C: Effects of doxapram on ionic currents recorded in isolated type I cells of the neonatal rat carotid body. Brain Res. 1991 Dec 24;568(1-2):116-22. - Pubmed
DTHybrid score 0.8345