What vitamins need to be increased during pregnancy?

Calcium, Folic Acid: & iron. Get in healthy proteins like red & black beans, chickpeas, fish (low mercury), poultry (75 to 100 gm of protein/ day). Calcium (1, 000 mg per day) with tofu, almonds, dairy products or eggs. Iron (27mg/day) from whole grains & green leafy veggies. Folic acid (600 to 800 mg/day with foods like melon, spinach, tomatoes, strawberries & turnips.