Folic Acid & Vitamin D: A supplemental folic acid daily intake of 400 μg for at least one month before and up to three months after conception increases maternal folate status. Low maternal folate status is a risk factor in the development of neural tube defects in the developing foetus. Vitamin D helps to support muscle function and normal bones and teeth for mums-to-be and build up Vitamin D stores for the baby in their early days. Vitamin B2 and B12: Help release energy from food. Vitamin C, Iron and Zinc: Help the immune system function normally.