3 months before carrying out IVF, you can take some vitamin A, vitamin B, vitamin C, vitamin D and vitamin E supplements. 1. Vitamin A: Vitamin A can enhance the vitality of sperm, which is conducive to increasing the probability of sperm and egg combination. 2. Vitamin B: Vitamin B plays an important role in cell division and the synthesis of amino acids and proteins. Vitamin B9, in particular, plays an important role in the neurovascular development of the embryo, so vitamin B can be supplemented in moderation before IVF. 3. Vitamin C: Vitamin C can maintain the normal metabolism of the body. Moderate supplementation before IVF can enhance the body’s immunity. 4. Vitamin D: Vitamin D can improve the environment of the endometrium, which is conducive to the implantation of IVF embryos after transfer. 5. Vitamin E: The hydrolyzed product of vitamin E can promote the secretion of estrogen, which can improve fertility and increase the probability of pregnancy. When you need to do IVF, it is recommended to go to the hospital in time and use vitamins under the doctor’s guidance, avoiding unauthorized use of medication.