The injections given on the belly for IVF are ovulation induction injections, and the commonly used injections are trenbolone acetate for injection. When a pregnant woman undergoes IVF treatment, in order to increase the chances of conception, injections are usually given to achieve the effect of inducing ovulation. Routinely applied drugs include injectable trenbolone acetate, which belongs to gonadotropin-releasing hormone analogs, and can achieve the purpose of promoting ovulation in the ovaries, including long-acting and short-acting medications. The long-acting one is administered once a month and the short-acting one is administered daily. Belly shots are chosen during treatment because abdominal fat is thicker and subcutaneous injections are easier and safer. The ovulation injections are given to regulate the endocrine axis and promote normal follicular development, which in turn increases the chances of conception.