BioStacks
Best for
Ingredients (2)
Acetyl-L-Carnitine
100%Dose/day
1000 mg
Target
500–2000 mg
Form
Premium
Vitamin C
11%Dose/day
28 mg
Target
250–2000 mg
Form
Budget
Other Ingredients (3)
Silicon DioxideAnti-caking
Fine silica powder used to prevent clumping
Microcrystalline CelluloseBinder
Plant-derived cellulose used as a binder and filler in supplements
Microcrystalline CelluloseBinder
Plant-derived cellulose used as a binder and filler in supplements
How to Take It
Take it anytime
Absorption is modest either way; taking it with carbohydrate-containing meals improves uptake.
With food
Split into 2 doses across the day
On the label
Take one (1) capsule two to four times daily, or as recommended by a healthcare practitioner. This product is best utilized when taken on an empty stomach with water or juice in divided doses 45 minutes before breakfast and lunch.
The label says to take it on an empty stomach. What's in this one sits better with food, and you give up little by taking it that way.
General guidance based on the ingredients, not a substitute for the label or your doctor.
Price Check
$36.00
Pricier than 75% of 119 carnitine 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.