BioStacks
Best for
Ingredients (7)
Taurine
100%Dose
2000 mg
Target
1000–3000 mg
Form
—
L-Citrulline
100%Dose
3500 mg
Target
3000–6000 mg
Form
—
L-Tyrosine
100%Dose
500 mg
Target
500–2000 mg
Form
—
Vitamin B12
17%Dose
42 mcg
Target
250–5000 mcg
Form
Premium
CarnoSyn
50%Dose
1600 mg
Target
3200–6400 mg
Form
—
Nutrition
Calories, macros & sodium.
- Calories10 Calorie(s)
- Sodium50 mg
- Total Carbohydrates2 Gram(s)
Other Ingredients (9)
SucraloseSweetener
Dose context matters. As a trace excipient in a tablet coating or capsule, the amount is minimal and not a meaningful concern. The evidence below applies to the gram-level intakes typical of sweetened protein powders, pre-workouts, and drink mixes: a 2022 human trial (Suez et al., Cell) showed sucralose disrupts gut bacteria and worsens blood sugar control in healthy adults, and a 2023 study (Schiffman et al.) found that sucralose-6-acetate — a compound formed when sucralose is digested — was genotoxic to human cells in vitro. It remains an artificial sweetener with no nutritional purpose.
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
Calcium SilicateAnti-caking
Inorganic compound used as an anti-caking and flow agent in powdered supplements
Citric AcidAcidulant
Natural acid derived from citrus fruits
Malic AcidAcidulant
Naturally occurring organic acid found in apples, used as a flavor enhancer and acidulant in supplements
Stevia ExtractSweetener
Zero-calorie natural sweetener extracted from the leaves of Stevia rebaudiana
Tartaric AcidAcidulant
A naturally occurring fruit acid used to adjust pH and add tartness
How to Take It
Best taken in the morning
The Tyrosine in it is what pulls this toward the morning. Vitamin B6 is easier on the stomach taken with food.
With food
Tyrosine 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.
Keep it away from protein-heavy meals
On the label
Directions: Mix 1 scoop in 8-12 ounces of cold water. Consume 20-30 minutes before your workout.
General guidance based on the ingredients, not a substitute for the label or your doctor.
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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.