Background and purpose: Hypoxia can lead to body function impairment. It is linked to the pathology of acute mountain sickness, cardiovascular disease, and stroke. Colchicine, an anti-inflammatory drug, is used chiefly in treatment of gout, but it is also valuable in other inflammatory conditions. Preliminary data shows that colchicine has beneficial effects on COVID-19. Nothing is known about the protective effect of this drug against hypoxia-induced lethality in mice. Materials and methods: Protective effects of colchicine against hypoxia-induced lethality in mice at 0.5, 1, and 1.5 mg/kg, P.O. were evaluated in three experimental models of hypoxia. Results: Colchicine showed good activity in some models. In the circulatory model, at 0.5 mg/kg, it significantly prolonged mice survival time for 4.5 min (P0.05). In the asphyctic model, colchicine did not show any activity. Conclusion: Colchicine showed good protective effects against hypoxia in circulatory and haemic models where the drug at 1.5 mg/kg, was more effective than the positive control, propranolol at 30 mg/kg.