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1) Puerariae Radix butanol ext. (100, 200, 400mg/kg, p.o. single treatment) alone partly showed blood pressure decreasing effect in SHRs and increasing effect of urinary volume in normal rats. 2) Cadmium nitrate (10mg/kg, s.c. single treatment) induced toxicity such as body weight decreasing effect, antidiuretic effect and muscle relaxant effect such as pull-up test, traction test and rota rod test in rats. However, Puerariae Radix butanol ext. (100, 200, 400mg/kg, p.o. single treatment) showed antidotal effects on the above and also in acute toxicity test when coadministered with both of them. 3) Cadmium nitrate (1mg/kg, s.c. 7 days consecutive treatment) did not showed toxicity in body weight change, blood pressure change, serum biochemical parameters in rats. Puerariae Radix butanol ext. (100, 200, 400mg/kg, p.o. 7 days consecutive treatment) did not also showed any antidotal effects when coadministered with both of them for 7 days.
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