BioStacks
Best for
Ingredients (8)
Vitamin B6
100%Dose
5 mg
Target
1.3–25 mg
Form
Premium
Melatonin
100%Dose
1 mg
Target
0.5–5 mg
Form
—
Vitamin D3
100%Dose
1000 IU
Target
1000–5000 IU
Form
Premium
Shoden® Ashwagandha Extract
100%Dose
60 mg
Target
60–120 mg
Form
Premium
GABA
100%Dose
100 mg
Target
100–300 mg
Form
—
Other Ingredients (2)
Rice FlourFiller
Rice-based ingredients carry risk of inorganic arsenic contamination (FDA and Consumer Reports). Rice accumulates arsenic from soil at higher rates than other grains. Used as a cheap filler — adds nothing beneficial.
Microcrystalline CelluloseBinder
Plant-derived cellulose used as a binder and filler in supplements
How to Take It
Best taken in the evening
Take 30–60 minutes before bed. It's a circadian signal, not a daytime supplement. Take it with a meal containing fat — the vitamin D in it absorbs poorly without one.
With a meal containing fat
Space it a couple of hours from Iron and Calcium
On the label
Take 2 capsules daily.
General guidance based on the ingredients, not a substitute for the label or your doctor.
Price Check
$54.95
Pricier than 95% of 586 vitamin D 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.