One of the most important steps in an IVF or IUI cycle is triggering ovulation at the right moment — and that’s exactly where the Ovidrel Injection plays its role. This medication is widely prescribed by fertility specialists to help the body release mature eggs, increasing the chances of fertilization and pregnancy. Administered as a subcutaneous injection, it is commonly known as the “trigger shot” because it triggers the final step of egg maturation and prepares the body for ovulation.