BioStacks
Best for
Ingredients (3)
Acetyl L-Carnitine
100%Dose
2000 mg
Target
500–2000 mg
Form
—
Propionyl L-Carnitine
100%Dose
2000 mg
Target
500–2000 mg
Form
—
Alpha-lipoic acid
100%Dose
600 mg
Target
300–600 mg
Form
Budget
Other Ingredients (4)
Silicon DioxideAnti-caking
Fine silica powder used to prevent clumping
Magnesium StearateLubricant
A salt of stearic acid used as a lubricant in tablet and capsule production
Gum AcaciaBinder
Natural plant gum (acacia) used as a binder, stabilizer, and emulsifier in foods and supplements
HypromelloseCapsule
Plant-derived capsule material from cellulose
How to Take It
Take it anytime
Absorption is modest either way; taking it with carbohydrate-containing meals improves uptake.
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
Take 8 capsules daily, or as directed by a healthcare professional.
General guidance based on the ingredients, not a substitute for the label or your doctor.
Price Check
$72.70
Pricier than 95% of 119 carnitine 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.