Can veterinary ivermectin be used after it has expired for one year?

I can't. Expiration of veterinary ivermectin will lead to uncertainty of vaccine efficacy and safety risks. The active ingredients in the drug will degrade, resulting in the vaccine can not provide the expected immune effect, quality and purity will also be affected, can not be used. In order to ensure the effectiveness and safety of veterinary vaccines, we should follow the principle of using only fresh and unexpired vaccines, pay attention to storage conditions, and store vaccines according to the recommended temperature range and lighting conditions.