BioStacks
Centrum

Whole O4

2 Capsules · 30 servings

iHerbAmazon
54 / 100Average

Best for

Stress & Mood

Score Breakdown

Formulation
52
Safety
100
Final score
54/100

Ingredients (25)

L-Theanine

100%

Dose

200 mg

Target

100–250 mg

Form

—

Pantothenic Acid

10%

Dose

5 mg

Target

50–500 mg

Form

Premium

Vitamin B12

1%

Dose

2.4 mcg

Target

250–5000 mcg

Form

Premium

Vitamin E

30%

Dose

15 mg

Target

50–268 mg

Form

Standard

Biotin

3%

Dose

30 mcg

Target

1000–5000 mcg

Form

—

Other Ingredients

No other ingredients listed

Track this supplement in your stack

Get personalized insights, interactions, and coverage recommendations.

Get Started Free

Similar Supplements

Products that cover similar health dimensions based on their ingredients.

Totally Zen

Carlson

Totally Zen

🧘 for Stress & Mood

59
Stress B-Complex

Nature Made

Stress B-Complex

🛡️ for Immune

53
Fully Active B Complex with Quatrefolic

Doctor's Best

Fully Active B Complex with Quatrefolic

⚡ for Energy

82
Super B-Complex

Igennus Healthcare Nutrition

Super B-Complex

🤰 for Pregnancy

74
Balanced B Complex

MegaFood

Balanced B Complex

🤰 for Pregnancy

61

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

  • Terms of Service
  • Privacy 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
© 2026 BioStacks. All rights reserved. Not medical advice.