BioStacks
Best for
Ingredients (9)
Acetyl L-Carnitine
100%Dose
600 mg
Target
500–2000 mg
Form
—
Vitamin B12
100%Dose
500 mcg
Target
250–5000 mcg
Form
Premium
L-Theanine
100%Dose
100 mg
Target
100–250 mg
Form
—
Vitamin B9
100%Dose
400 mcg dfe
Target
400–800 mcg
Form
Budget
Vitamin B2
20%Dose
5 mg
Target
25–100 mg
Form
Budget
Other Ingredients (4)
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.
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
HypromelloseCapsule
Plant-derived capsule material from cellulose
How to Take It
Best taken in the morning
The Vitamin B12 in it is what pulls this toward the morning. What's in this is easier on the stomach taken with food.
With food
ALA 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.
On the label
nitial Use: Start with (1) capsules a day for a week. Assess tolerance and monitor results before taking suggested dose. Suggested Use: As a dietary supplement, take two (2) capsules once a day. For Best results take 20-30 min. before a meal or as directed by a healthcare professional.
General guidance based on the ingredients, not a substitute for the label or your doctor.
Price Check
$32.00
Near the median of 239 energy 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.