BioStacks
Best for
Ingredients (11)
Zeaxanthin
100%Dose
2 mg
Target
2–4 mg
Form
—
Organic Spirulina
100%Dose
3000 mg
Target
1000–3000 mg
Form
—
Vitamin A
100%Dose
2250 mcg RAE
Target
700–1500 mcg
Form
Budget
Vitamin B12
3%Dose
7 mcg
Target
250–5000 mcg
Form
Not listed
Iron
33%Dose
5 mg
Target
15–45 mg
Form
Not listed
Nutrition
Calories, macros & sodium.
- Sodium50 mg
Other Ingredients
No other ingredients listed
How to Take It
Best taken in the morning
The Vitamin B12 in it is what pulls this toward the morning. Take it with a meal containing fat — the vitamins A and K in it absorb poorly without one.
With a meal containing fat
Iron does better on an empty stomach, but something else in this bottle needs food. Taking the whole product with a meal is the better trade — an upset stomach is why most people stop.
Keep it away from coffee, tea and dairy
Space it a couple of hours from Calcium, Zinc, Magnesium, Manganese and Green Tea Leaf Extract
On the label
As a dietary supplement, take 600 mg one to three times daily. For best results, please consult your physician. Individual needs may vary.
General guidance based on the ingredients, not a substitute for the label or your doctor.
Price Check
$25.95
Pricier than 73% of 143 vitamin A supplements
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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.