BioStacks
One A Day

Women's Prenatal Advanced

1 Tablet · 30 servings · $0.72/serving

iHerbAmazon

Best for

PregnancyGeneral HealthImmune

Ingredients (22)

Vitamin B6

100%

Dose

2 mg

Target

1.3–25 mg

Form

—

Choline

100%

Dose

110 mg

Target

100–500 mg

Form

—

Niacin

72%

Dose

18 mg

Target

25–500 mg

Form

—

Pantothenic Acid

14%

Dose

7 mg

Target

50–500 mg

Form

—

Biotin

4%

Dose

35 mcg

Target

1000–5000 mcg

Form

—

Other Ingredients (9)

AnnattoColorant

Natural yellow-orange colorant derived from the seeds of the achiote tree (Bixa orellana)

Magnesium OxideMineral Source

An inorganic magnesium salt used as a magnesium source or bulking mineral.

Soy LecithinEmulsifier

Widely used emulsifier derived from soybeans

Calcium CarbonateBuffer

Common calcium salt used as a buffering agent, filler, or mineral fortification in supplements

Calcium CarbonateBuffer

Common calcium salt used as a buffering agent, filler, or mineral fortification in supplements

GelatinCapsule

Protein derived from collagen, used in traditional capsule shells

GlycerinHumectant

Sweet-tasting liquid used in soft capsules and liquids

Purified WaterSolvent

Water meeting USP specifications used as solvent/vehicle in gummies and liquids

How to Take It

Take it anytime

No evidence a formula this broad works better at any particular hour. Take it with a meal containing fat — the vitamins A, D and E in it absorb poorly without one.

With a meal containing fat
Keep it away from coffee, tea and dairy
Space it a couple of hours from Magnesium, Manganese and Green Tea Leaf Extract

On the label

Adults, take one softgel and one tablet daily with food.

General guidance based on the ingredients, not a substitute for the label or your doctor.

Price Check

$21.48

$10$20$50

Near the median of 798 multivitamins

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Sources & Scoring

Nutrient data (RDA, UL, and safety thresholds) sourced from: NIH Office of Dietary Supplements and National Academies Dietary Reference Intakes (DRI).

This is not medical advice. Consult a healthcare provider before making changes to your supplement routine.

The score analyzes what's on the label: ingredient doses vs. clinical ranges, chemical forms, evidence levels, and known interactions. It does not verify label accuracy or test for contaminants — for that, look for third-party certifications like USP or NSF.

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