According to research, certain vitamins and supplements may improve fertility in both women and men. Fertility supplements will help you meet the daily requirements of nutrients that can be hard to derive from food alone. Whether you are trying to conceive or are pregnant already, consider taking prenatal vitamins and supplements to achieve optimum health and nutrition that your body will need to grow a baby. Look out for folic acid, Omega 3 fatty acids, B and D Vitamins as well as CoQ10.