If you're hoping for hair, skin, or nail support, this **Biotin** supplement delivers 10,000 mcg per tablet — well above the 1,000–5,000 mcg range commonly found in similar products. However, biotin supplementation has only shown clear benefits in people who are actually deficient. If your levels are normal, the clinical evidence for hair or nail improvement is weak.
The 96 mg of **Calcium** (as carbonate) is minimal and unlikely to contribute meaningfully to your daily intake. It's there as a tablet binder, not a functional dose.
The biggest thing to know before buying: biotin's reputation far outpaces its research. There are no well-designed RCTs proving it grows hair or strengthens nails in healthy, non-deficient adults. If you suspect a deficiency, this dose is more than adequate — but if you're hoping for cosmetic results on its own, the evidence isn't there to support that expectation.
BioStacks
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Ingredients (2)
Biotin
100%Dose
10000 mcg
Target
1000–5000 mcg
Form
—
Calcium
96 mgTrace amount — not scored
Other Ingredients (3)
MaltodextrinBinder
Spikes blood sugar faster than table sugar (glycemic index 85–105). Research links it to gut bacteria changes that may promote intestinal inflammation (Nickerson et al. 2015). Used as a cheap filler — adds nothing beneficial.
Microcrystalline CelluloseBinder
Plant-derived cellulose used as a binder and filler in supplements
Stearic AcidLubricant
Saturated fatty acid used as tablet lubricant
How to Take It
Take it anytime
Timing doesn't matter — but stop taking it 2–3 days before any blood test. Biotin skews thyroid and troponin lab results.
With or without food
On the label
Directions: 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
$9.99
Cheaper than 70% of 140 vitamin B7 supplements
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Sources & Scoring
Nutrient data (RDA, UL, and safety thresholds) sourced from the NIH Office of Dietary Supplements and the 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. studied 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.