BioStacks
Best for
Ingredients (4)
Vitamin D3
40%Dose
400 IU
Target
1000–5000 IU
Form
Premium
Vitamin C
40%Dose
100 mg
Target
250–2000 mg
Form
Budget
Zinc
100%Dose
15 mg
Target
15–30 mg
Form
Budget
Sambucus nigraa (elderberry) fruit juice conc.
48%Dose
143 mg
Target
300–600 mg
Form
—
Other Ingredients
No other ingredients listed
How to Take It
Take it anytime
Fat-soluble — take with your largest fat-containing meal. Time of day doesn't matter.
With a meal containing fat
Space it a couple of hours from Iron and Calcium
On the label
Adults Take 1 tablet once a day, or as prescribed by a health professional. Take with food.
General guidance based on the ingredients, not a substitute for the label or your doctor.
Price Check
No price yet
What 502 vitamin C supplements cost
Track this supplement in your stack
Get personalized insights, interactions, and coverage recommendations.
Get Started FreeSimilar Supplements
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.