Folic acid is crucial for preventing neural tube defects like spina bifida in babies. The recommended daily dosage of folic acid during the first trimester is 400-800 micrograms (mcg). It is important to start taking folic acid at least one month before conception and continue until the end of the first trimester. If you have a history of neural tube defects or are taking certain medications, your healthcare provider may recommend a higher dosage. Remember to consult with your doctor about your specific needs and follow their guidance closely to ensure a healthy pregnancy.