BioStacks
Designs for Health
PreTrain NRG™ (Cherry Lime)
Powder · 9 Grams (Approx. One Scoop) · 20 servings · $3.87/serving
Best for
Ingredients (9)
Acetyl L-Carnitine HCI
100%Dose
1500 mg
Target
500–2000 mg
Form
—
Caffeine
100%Dose
100 mg
Target
100–400 mg
Form
—
L-Theanine
100%Dose
200 mg
Target
100–250 mg
Form
—
Magnesium Creatine Chelate
100%Dose
2500 mg
Target
100–400 mg
Form
Standard
N-Acetyl-L-Tyrosine
100%Dose
750 mg
Target
500–2000 mg
Form
—
Nutrition
Calories, macros & sodium.
- Sodium 40 mg
Other Ingredients (5)
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.
Citric AcidAcidulant
Natural acid derived from citrus fruits
Guar GumThickener
Natural thickener derived from guar beans
Monk Fruit ExtractSweetener
Zero-calorie natural sweetener derived from the monk fruit (Siraitia grosvenorii)
Stevia ExtractSweetener
Zero-calorie natural sweetener extracted from the leaves of Stevia rebaudiana
How to Take It
Best taken in the morning
Contains Caffeine, which is stimulating — keep it to the morning. What's in this 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, medication and mineral supplements
Space it a couple of hours from Iron and Calcium
On the label
Mix 1 scoop in 8-12 oz of water per day. Consume 30-45 minutes prior to a workout.
General guidance based on the ingredients, not a substitute for the label or your doctor.
Price Check
$77.49
Pricier than 95% of 239 energy supplements
Track this supplement in your stack
Get personalized insights, interactions, and coverage recommendations.
Get Started FreeSimilar Supplements
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. 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.