The difference between progesterone shots and progesterone capsules lies in the different dosage forms. Progesterone shots and progesterone capsules are both progesterone drugs that can be used to supplement the progesterone deficiency in the body and promote the growth of the endometrium. It can provide support and protection for the growth and development of the fetus in early pregnancy, and is used to treat irregular menstruation and pre-eclampsia caused by insufficient progesterone levels. Progesterone injection is an injection, can be used directly for intramuscular injection, the effect will generally be faster than oral progesterone capsules, but not as convenient as oral progesterone capsules, when injecting progesterone injection need to go to the hospital injection, while oral progesterone capsules can be self-medication at home, the two treatment effect is similar.