Best prenatal vitamins: what to look for in 2026

What are the best prenatal vitamins?

The best prenatal vitamin is one that contains evidence-based doses of the nutrients that matter most for pregnancy, uses bioavailable forms of those nutrients, and is something you'll actually take every day. Beyond that, the "best" one depends partly on your individual health profile.

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What to look for in a prenatal

Based on a 2022 review of the research literature and an analysis of 188 prenatal supplements on the market, the following nutrients and doses represent evidence-based targets:

• Folate: 800-1000 mcg. Look for methylfolate (L-5-MTHF) if you have an MTHFR variant.

• Iron: 18-27 mg, ideally as iron bisglycinate or another chelated form that's easier on the stomach.

• Vitamin D: 2000-4000 IU. Many prenatals underdeliver on vitamin D. Given that deficiency is common, especially in higher latitudes, this is a nutrient worth paying attention to.

• Choline: 400-450 mg per day is the recommended intake during pregnancy, but most prenatals contain little to none. 

• DHA: 200-300 mg minimum. Some prenatals include DHA in the formula, however, separating can prevent oxidation.

• Iodine: 150-220 mcg, important for thyroid function and fetal brain development.

What the best prenatals have in common

Quality prenatals are third-party tested for purity and potency. They use bioavailable forms of key nutrients (methylfolate over folic acid, iron bisglycinate over ferrous sulfate). And they provide adequate doses rather than just checking boxes with token amounts.

RELATED: Can men take prenatal vitamins? What to know about male prenatal nutrition

A note from WeNatal on what are the best prenatal vitamins

WeNatal was designed with all of this in mind. WeNatal for Her includes methylfolate, iron bisglycinate, vitamin D3, choline, and other evidence-backed nutrients at clinically relevant doses. It's also formulated as a his-and-hers system, recognizing that fertility is a two-person effort. When comparing prenatals, look at the label carefully, check nutrient forms (not just names), and verify that key nutrients like choline, DHA, and vitamin D are present in meaningful amounts.

RELATED: The ultimate preconception guide: What to do when you’re ready to get pregnant 

References

Adams JB, et al. (2022). Maternal Health, Neonatology and Perinatology, 8:4. DOI: 10.1186/s40748-022-00139-9