Table 2. Therapeutic effect of SHL on C48/80-induced anaphylactic shock in mice (n = 12).

Group	Dose	Survival rate (%)
Control	None (saline)	0
Ketotifen*	47 μmol/kg	25
Cromolyn sodium*	0.4 mmol/kg	25
SHL*	1.25 ml/kg	8.3
SHL	2.5 ml/kg	58.3
SHL	5 ml/kg	91.7

^*SHL or the positive controls (ketotifen or cromolyn sodium) was i.p. injected only once 5 min after the C48/80 challenge.