BioStacks
21st Century

Folic Acid 800 mcg

1 Tablet · 180 servings · $0.03/serving

iHerbAmazon

Ingredients (3)

Folic Acid

100%

Dose

800 mcg

Target

400–800 mcg

Form

Budget

Folate

100%

Dose

1334 mcg dfe

Target

400–800 mcg

Form

Not listed

Calcium

100 mg

Trace amount — not scored

Other Ingredients (6)

Magnesium StearateLubricant

A salt of stearic acid used as a lubricant in tablet and capsule production

Silicon DioxideAnti-caking

Fine silica powder used to prevent clumping

Microcrystalline CelluloseBinder

Plant-derived cellulose used as a binder and filler in supplements

Croscarmellose SodiumDisintegrant

Cross-linked cellulose derivative used as a superdisintegrant

Gum AcaciaBinder

Natural plant gum (acacia) used as a binder, stabilizer, and emulsifier in foods and supplements

Stearic AcidLubricant

Saturated fatty acid used as tablet lubricant

How to Take It

Take it anytime

Water-soluble — timing is flexible. Consistency matters more than the clock.

With or without food

On the label

As a vitamin supplement, adults take one (1) tablet daily with any meal or as directed by a healthcare provider. Do not exceed recommended dosage.

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

Price Check

$4.99

$5$10$20$50

Cheaper than 96% of 138 vitamin B9 supplements

Track this supplement in your stack

Get personalized insights, interactions, and coverage recommendations.

Get Started Free

Similar Supplements

Folic Acid 1000 mcg

GNC

Folic Acid 1000 mcg

🤰 for Pregnancy

50
Folic Acid 400 mcg

Windmill

Folic Acid 400 mcg

🤰 for Pregnancy

50
Folic Acid 1000 mcg

Best Naturals

Folic Acid 1000 mcg

🤰 for Pregnancy

48
Folic Acid 400 mcg

21st Century

Folic Acid 400 mcg

🤰 for Pregnancy

47
Folic Acid 400 mcg

Natural Factors

Folic Acid 400 mcg

🤰 for Pregnancy

47

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.

BioStacks

Know exactly what's in your supplements.

Navigate

  • Home
  • App Store
  • Google Play

Resources

  • Contact & Support
  • Pricing
  • Terms of Service
  • Privacy Policy
  • Refund Policy

Explore

  • Health Areas
  • Best Supplements
  • Nutrients
  • All Supplements

Popular Picks

  • Best Magnesium for Sleep
  • Best Collagen for Skin
  • Best Creatine for Muscle
  • Best Vitamin D for Bone Health
  • Best Probiotics for Digestion
  • Best CoQ10 for Heart

Free Tools

  • Interaction Checker
  • Dose Checker
  • Form Comparison

Field Guides

  • Magnesium for sleep
  • Reading labels
  • Interaction checker
  • Dose checker
  • Harmful ingredients
  • Proprietary blends
  • Stack building
  • Scan without barcode
  • All guides →
© 2026 BioStacks. All rights reserved. Not medical advice.