Analgesia Synergism of Essential Oil from Pericarp of Zanthoxylum schinifolium and Verapamil

Table 5

Effect of amplitude of action potential (AP) of sciatic nerve in toads (𝑥±𝑠, 𝑛=5).

Group	Dosage (g/mL)	Preadmin/mV	Proadmin/mV			Time of AP; vanishing
			1 min	5 min	10 min	min
RS		4.35 ± 1.25	4.26 ± 1.32	4.30 ± 1.16	4.33 ± 1.53	exist
EOZ	0.2%	4.39 ± 1.43	3.21 ± 0.85①③	0	0	4.98 ± 0.92③
Ver	0.05%	4.42 ± 1.02	4.39 ± 1.32	4.43 ± 1.06	4.29 ± 1.34	exist
EOZ + Ver	0.2% + 0.05%	4.45 ± 1.03	2.36 ± 1.02②③	0	0	2.62 ± 0.58③⑤
Lid	1%	4.53 ± 1.12	4.52 ± 1.35	4.50 ± 1.65①③	4.38 ± 1.65①③	22.89 ± 6.52③

Compared with preadministration: ①: 𝑃<0.05, ②: 𝑃<0.01; compared with NS group: ③: 𝑃<0.05, ④: 𝑃<0.01; compared with EOZ group: ⑤: 𝑃<0.05.