This women's multi delivers where it counts most: **Vitamin D3** at 1,000 IU hits the minimum clinical dose for healthy blood levels, **Iron** at 18mg matches the RDA for premenopausal women, and **Folate** at 400 mcg covers you if you're of childbearing age. The **Vitamin C** alongside iron helps boost its absorption — a useful pairing.

The tradeoffs show up in form quality. **Zinc** is just 8mg in oxide form, which is poorly absorbed. **Vitamin E** uses the synthetic DL-alpha form, delivering roughly 25% of the activity of a natural form. **B12** is cyanocobalamin, which your body needs to convert before using. There's no **magnesium** at all — a significant gap since it's involved in hundreds of body processes.

If you're looking for budget iron and vitamin D coverage, this checks those boxes. But you'd need to supplement magnesium, zinc, and vitamin K separately.

BioStacks
21st Century

One Daily Women's

1 Tablet · 100 servings · $0.07/serving

26 / 100Poor

Score Breakdown

Formulation
55
Safety
42
Final score
26/100

Ingredients (21)

Vitamin D3Synergy1000 IU

Within effective range · Premium form

IodineSynergy150 mcg

Within effective range · Premium form

Pantothenic Acid5 mg

10% of effective dose · Premium form

IronSynergyConflict18 mg

Within effective range

Vitamin B61.7 mg

7% of effective dose · Premium form

Other Ingredients

Fillers, coatings, and additives

10Safe2Avoid

TalcAnti-caking

Avoid

Polysorbate 80Emulsifier

Avoid

Polyethylene Glycol (Coating)Coating

Safe

Polyvinyl AlcoholCoating

Safe

Silicon DioxideAnti-caking

Safe

Microcrystalline CelluloseBinder

Safe

Croscarmellose SodiumDisintegrant

Safe

Dicalcium PhosphateBinder

Safe

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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.