Naloxone does not affect ventilatory responses to hypoxia and hypercapnia in rats.

@article{Steinbrook1984NaloxoneDN,
  title={Naloxone does not affect ventilatory responses to hypoxia and hypercapnia in rats.},
  author={Richard A. Steinbrook and Henry A. Feldman and V Fencl and Vincent A. Forte and Ronald A. Gabel and David E. Leith and Steven E. Weinberger},
  journal={Life sciences},
  year={1984},
  volume={34 9},
  pages={
          881-7
        }
}
Ventilatory responses (tidal volume, respiratory frequency, and minute ventilation) to steady-state hypoxia and steady-state hypercapnia were measured plethysmographically in awake unrestrained adult rats, before and after subcutaneous injection of placebo (saline) naloxone in doses up to 5.0 mg/kg. Naloxone did not alter the ventilatory responses to hypoxia or hypercapnia.