 Do not use Vivgard Hytrulo if you have a serious allergy to any of its ingredients. It can cause serious allergic reactions like trouble breathing and decrease in blood pressure leading to fainting and allergic reactions such as rashes, swelling under the skin, shortness of breath, and hives. The most common side effects are respiratory and urinary tract infections, headache, and injection site reactions. It may increase the risk of infusion-related reactions and infection.