BioStacks
Ingredients (6)
L-Carnitine
100%Dose
1000 mg
Target
500–2000 mg
Form
—
Natural Caffeine
100%Dose
200 mg
Target
100–400 mg
Form
—
Betaine Anhydrous
100%Dose
2500 mg
Target
2500–6000 mg
Form
—
Creatine Monohydrate
67%Dose
2 g
Target
3–5 g
Form
Premium
Beta-Alanine
63%Dose
2000 mg
Target
3200–6400 mg
Form
—
Nutrition
Calories, macros & sodium.
- Sodium190 mg
Other Ingredients (10)
ErythritolSweetener
Witkowski et al. 2023 (Nature Medicine, PMID 36849732) reported elevated plasma erythritol associated with major adverse cardiovascular events (MACE) in two cohorts (n=4,000+), with in-vitro and ex-vivo evidence of enhanced platelet aggregation. Replication is ongoing; FDA and EFSA have not changed their safety positions, but the signal is real and the additive is purely cosmetic. Better-established concern: GI tolerance — single doses above ~50 g cause osmotic diarrhea. Lower threshold for children.
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.
Beet ColorColorant
Natural red-pink colorant from dehydrated beets or beet juice; the pigment is betanin
Natural FlavorsFlavor
Broad regulatory category of flavor constituents derived from natural sources. Composition is proprietary and not disclosed — 'Natural Flavors' can include several hundred different compounds depending on the target flavor profile, including hexane-extracted constituents and proprietary carrier solvents. 'Natural' is a regulatory definition (21 CFR §101.22), not a safety guarantee.
Silicon DioxideAnti-caking
Fine silica powder used to prevent clumping
Stevia ExtractSweetener
Zero-calorie natural sweetener extracted from the leaves of Stevia rebaudiana
Citric AcidAcidulant
Natural acid derived from citrus fruits
Guar GumThickener
Natural thickener derived from guar beans
How to Take It
Best taken in the morning
Contains Caffeine, which is stimulating — keep it to the morning. Carnitine is easier on the stomach taken with food.
With food
Arginine 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
Mix 1 1/2 level tablespoons in 14-16 oz of water or other beverage 20-30 minutes before workout.
General guidance based on the ingredients, not a substitute for the label or your doctor.
Price Check
$52.99
Near the median of 165 muscle 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.