Fig. 2From: Pharmacokinetics, adverse effects and effects on thermal nociception following administration of three doses of codeine to horsesMean ± SD plasma concentrations of codeine-6-glucuronide (C6G), norcodeine, morphine, morphine-6-glucuronide (M6G) and morphine-3-glucuronide (M3G) with respect to time after a single oral administration of codeine (0.3, 0.6 and 1.2 mg/kg) or intravenous administration of morphine (0.2 mg/kg) to seven horsesBack to article page