BioStacks
Best for
Ingredients (10)
Melatonin
100%Dose
3 mg
Target
0.5–5 mg
Form
—
Vitamin B6
100%Dose
10 mg
Target
1.3–25 mg
Form
Premium
GABA
100%Dose
150 mg
Target
100–300 mg
Form
—
Valerian Root Extract
83%Dose
250 mg
Target
300–600 mg
Form
—
L-Theanine
50%Dose
50 mg
Target
100–250 mg
Form
—
Other Ingredients (4)
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.
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.
Rice HullsAnti-caking
Ground outer husk of rice grains used as a plant-based flow and anti-caking agent
HypromelloseCapsule
Plant-derived capsule material from cellulose
How to Take It
Best taken in the evening
Take 30–60 minutes before bed. It's a circadian signal, not a daytime supplement. Vitamin B6 is easier on the stomach taken with food.
With food
Keep it away from protein-heavy meals
Space it a couple of hours from SAMe
On the label
Take 1 to 2 capsules 30 minutes before going to sleep.
Do not combine with St. John's Wort
Each of these raises serotonin activity on top of St. John's Wort, and together they can trigger serotonin syndrome — agitation, rapid heartbeat, raised blood pressure. Not without medical supervision.
General guidance based on the ingredients, not a substitute for the label or your doctor.
Price Check
$18.99
Near the median of 50 GABA 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.