The aqueous extract of Delphinium denudatum (Dd) roots showed a significant effect against morphine- (10 mg/kg) induced tolerance and dependence in mice. Oral administration of the extract (200-1600 mg/kg) showed a significant dose-dependent inhibition of naloxone- (1 mg/kg) induced withdrawal.
Department of Ilmul Advia (Pharmacology), Faculty of Medicine (Unani), Hamdard University, Hamdard Nagar, New Delhi 110062, India. shadabzafar@rediffmail.com