Alpha-CD is a one dose C & D toxoid for all kinds of cattle. Aids in the reduction of enterotoxemia that is caused by Clostridium perfringens Types C & D toxins. Unique DD-2 adjuvant maximizes immune response while stimulating a high degree and long duration of protection. A single dose provides protective levels of immunity to the cattle. You will give 2 ml SQ. Calves vaccinated at less than 3 months of age should be revaccinated at weaning or 4-6 months of age. Annual booster is recommended. May be some swelling at the injection site.