April 24, 2026 Updated on October 06, 2026
When should I start taking prenatal vitamins?
When should I start taking prenatal vitamins?
Start at least one month before trying to conceive. Three to six months is optimal. If you're not actively trying but pregnancy is possible, starting now is a reasonable and protective move.
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A quick recap of the science
Folate at 0.4-0.8 mg daily reduces the first occurrence of neural tube defects. At 4 mg daily, it reduces recurrence by more than 70% in people with a prior affected pregnancy. Red blood cell folate levels reach protective thresholds after approximately 3-6 months of daily supplementation.
Beyond folate, nutrients like iron, vitamin D, and choline also build up over time. Starting early means your body has strong stores when the demands of pregnancy ramp up.
I just found out I'm pregnant. Is it too late?
It's never too late to start. While the neural tube closes within the first 28 days, prenatal vitamins continue to provide benefits throughout pregnancy. Iron prevents anemia, vitamin D supports bone development, and DHA aids brain growth in the second and third trimesters.
RELATED: How to choose a prenatal vitamin
A note from WeNatal when you should start taking prenatal vitamins
WeNatal for Her was built for the preconception period and beyond. Starting early means your body is ready when it matters most. If you've just found out you're pregnant, it's a great time to begin. Every day counts.
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