Figures & data
Figure 1 Effects of calcium channel blockers, ie, verapamil 10 and 20 mg/kg, diltiazem 15 and 30 mg/kg, and nifedipine 10 and 20 mg/kg on withdrawal precipitated by naloxone 10 mg/kg.
Notes: *P < 0.05; **P < 0.01 versus control.
Figure 2 Effect of a combination of levodopa 50 mg/kg + carbidopa 5 mg/kg versus terazosin 1 mg/kg with levodopa 50 mg/kg + carbidopa 5 mg/kg on morphine withdrawal precipitated by naloxone 2 mg/kg.
