Progesterone Vaginal Delayed Release Gel is a progestational drug that is commonly used clinically for the supplemental treatment of progesterone in assisted reproduction techniques. The drug is as effective as oral medications and progesterone injections. Since progesterone is the main substance in the development of the metaplastic tissue, it is an essential component to increase the receptivity of the endometrium to the implantation of a pregnant egg, and also serves to maintain the pregnancy after the fertilized egg has been implanted. The drug can be used to treat progesterone deficiency in women. However, the use of this drug can cause adverse reactions, such as allergic reactions, perineal pain, nausea, vomiting, joint pain, loss of libido, etc. It is recommended to use it under the guidance of a physician.