BioStacks
Best for
Ingredients (10)
Zinc
100%Dose/day
15 mg
Target
15–30 mg
Form
Premium
Biotin
75%Dose/day
750 mcg
Target
1000–5000 mcg
Form
—
Gamma Oryzanol
100%Dose/day
300 mg
Target
150–300 mg
Form
—
Vitamin A
100%Dose/day
1800 mcg RAE
Target
700–1500 mcg
Form
Not listed
N-Acetyl-L-Cysteine
75%Dose/day
450 mg
Target
600–1800 mg
Form
—
Other Ingredients (4)
Magnesium StearateLubricant
A salt of stearic acid used as a lubricant in tablet and capsule production
Silicon DioxideAnti-caking
Fine silica powder used to prevent clumping
Stearic AcidLubricant
Saturated fatty acid used as tablet lubricant
HypromelloseCapsule
Plant-derived capsule material from cellulose
How to Take It
Take it anytime
Take it with a meal containing fat — the vitamin A in it absorbs poorly without one.
With a meal containing fat
NAC 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.
Space it a couple of hours from Iron and Calcium
Split into 3 doses across the day
On the label
2 capsules three times per day or as recommended by your health care professional.
General guidance based on the ingredients, not a substitute for the label or your doctor.
Price Check
$108.00
Pricier than 99% of 90 glutamine 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.