Who should avoid taking Hyalgan? Do not use Hyalgan if you have a known allergy to any of the ingredients., Do not use Hyalgan if you have an active infection in the joint or the skin around the injection site. What are the risks? The safety and effectiveness of Hyalgan used in joints other than the knee have not been established., Tell your doctor if you are allergic to bird proteins, feathers, or eggs., The Hyalgan injection must be conducted under aseptic conditions. Do not try to self-administer Hyalgan., Do not use any Hyalgan syringes that appear damaged or previously opened., If you are pregnant or intending to become pregnant, discuss the risk with your doctor.