“Folic acid has been shown to effectively reduce the risk of neural tube defects (NTDs). A daily 4 mg dose is recommended for patients who have had a previous pregnancy affected by neural tube defects. It should be started atleast 1 month (ideally 3 months) prior to pregnancy and continued through the first 6–12 weeks of pregnancy.” COGDT 10/e, p 197 Remember: Therapeutic dose of folic acid (to be given in females with previous history of baby with NTD) - 4 mg. Prophylactic dose of folic acid = 0.4 mg i.e. 400 mg Duration: It should be started 1 month before conception and continued till 3 months of pregnancy.
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