Objective: To study the acute toxicity and hypersensibility of Veratrum nigrum Lard embrocation so as to provide references for clinical application. Methods: Acute toxicity test, skin irritation test and skin allergy test were performed to evaluate its safety. Results: There were no obvious erythema and edema response after the damaged skin had contact with Veratrum nigrum Lard preparation. Conclusion: Veratrum nigrum Lard embrocation showed low acute toxicity and no hypersens...