What vitamins and minerals need to be taken when pregnant and how much of each?

During pregnancy, key vitamins and minerals include folic acid (400-800 mcg daily), iron (27 mg daily), calcium (1,000 mg daily), and vitamin D (600 IU daily). Folic acid helps prevent neural tube defects, while iron supports increased blood volume and prevents anemia. Calcium is vital for fetal bone development, and vitamin D aids in calcium absorption. It's important to consult with a healthcare provider for personalized recommendations.