Hynidase 1500IU Injection is used to improve the absorption of injections. It contains Hyaluronidase which works by increasing the permeability of connective tissue through hyaluronic acid hydrolysis. In some cases, this medicine may cause side effects such as swelling, irritation, or bruising at the injection site. Inform the doctor if you are pregnant or breastfeeding, taking any other medication, or have any pre-existing medical conditions