Optimum Nutrition , Pre-Workout Amped Powder, Tropical Fury, High Stim, Sugar-Free, Caffeine supplement bottle
Optimum Nutrition

, Pre-Workout Amped Powder, Tropical Fury, High Stim, Sugar-Free, Caffeine

What We Researched
12 active ingredients analyzed · 7 inactive ingredients decoded · 9 brand certifications checked · 1 retailer compared · Last updated: Mar 2026
87
Product Score Good
92
Brand Score Excellent

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Vitamin C (as ascorbic acid) 267.0 mg 297%
Vitamin D (as cholecalciferol) 25.0 mcg 125%
Calcium 40.0 mg 3%
Magnesium 28.0 mg 7%
Chloride 220.0 mg 10%
Potassium 110.0 mg 2%
Micronized L-Citrulline 6.0 g †
Beta-Alanine 3.5 g †
Nootropic Focus Blend 900.0 mg †
Caffeine 300.0 mg †
Electrolyte Blend 890.0 mg †
Bioavailability Excellent

Absorption Rating

  • Vitamin C (as ascorbic acid) Fair
  • Vitamin D (as cholecalciferol) Good
  • Calcium Good
  • Magnesium Good
  • Chloride Good
  • Potassium Good
  • Micronized L-Citrulline Good
  • Beta-Alanine Good
  • Caffeine Good
Other Ingredients Excellent

Fillers & Additives

  • L-Leucine
  • Citric Acid
  • Natural and Artificial Flavor
  • Calcium Silicate
  • Silicon Dioxide
  • Sucralose
  • Acesulfame Potassium
Efficacy Fair

Dosage Analysis

  • Vitamin C (as ascorbic acid) 267.0 mg Effective
  • Vitamin D (as cholecalciferol) 25.0 mcg Effective
  • Calcium 40.0 mg Under-dosed
  • Magnesium 28.0 mg Under-dosed
  • Chloride 220.0 mg Under-dosed
  • Potassium 110.0 mg Under-dosed
  • Micronized L-Citrulline 6.0 g Effective
  • Beta-Alanine 3.5 g Effective
  • Caffeine 300.0 mg Effective

Supplement Facts

Ingredient Amount % Daily Value
Vitamin C (as ascorbic acid) 267.0 mg 297%
Vitamin D (as cholecalciferol) 25.0 mcg 125%
Calcium 40.0 mg 3%
Magnesium 28.0 mg 7%
Chloride 220.0 mg 10%
Sodium 230.0 mg 10%
Potassium 110.0 mg 2%
Micronized L-Citrulline 6.0 g †
Beta-Alanine 3.5 g †
Nootropic Focus Blend 900.0 mg †
Caffeine 300.0 mg †
Electrolyte Blend 890.0 mg †

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

L-Leucine Safe

It is included for its potential muscle-building and recovery benefits.

Citric Acid Safe

Adds tartness and acts as a natural preservative. Also aids in ingredient stability.

Natural and Artificial Flavor Generally_safe

It is used to improve the taste of the product.

Calcium Silicate Safe

Prevents ingredient clumping during manufacturing.

Silicon Dioxide Safe

Prevents clumping and ensures consistent dosing.

Sucralose Generally_safe

Adds sweetness to chewables, gummies, and powdered supplements without calories.

Acesulfame Potassium Generally_safe

It is used to provide sweetness without adding calories.

Price Comparison

Target $24.99 $1.25 / serving
Best Price

Price History

Tracked across major retailers. Updated periodically.

$27$26$25$24$23 $24.99
Target

Prices shown at time of last check. Click a retailer to see current price. GoodSupp is not affiliated with any retailer.

Brand Trust Report
Optimum Nutrition

Founded 1986 · Downers Grove, IL, United States · 95 products · optimumnutrition.com

Certifications

9 certifications
Consumerlab Verified Source
Informed Sport Verified Source
Labdoor Verified Source
Nsf Certified For Sport Verified Source
Usda Organic Verified Source
Vegan Certified Verified Source
Fda Gmp Inspections Verified Source
Non Gmo Project Verified Source
Nsf Gmp Verified Source

Transparency

4 claims
Third Party Testing Claim — Verified Source
Testing Lab Disclosure — Claimed Source
In House Testing — Verified Source

Violation History

5 incidents
Prop 65 Lead2025-07-21Source
Prop 65 Lead2024-11-22Source
Recall Various nutritional and beverage products2022-07-28Source
Prop 65 Lead2017-03-10Source
Lawsuit Deceptive claims about the plant-based enzyme 'Aminogen' and its effect on protein digestion and absorption.2013Source
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Frequently Asked Questions
Is Optimum Nutrition , Pre-Workout Amped Powder a good supplement?

Optimum Nutrition , Pre-Workout Amped Powder, Tropical Fury, High Stim, Sugar-Free, Caffeine received a product quality score of 87/100 in GoodSupp's independent analysis, indicating strong overall quality. The product contains 12 active ingredients with 20 servings per container. Of the 7 inactive ingredients, 4 are rated safe and 0 are flagged for review. The manufacturer, Optimum Nutrition, holds a brand trust score of 92/100 with 9 verified certifications including Consumerlab, Informed Sport, Labdoor, Nsf Certified For Sport.

What are the ingredients in Optimum Nutrition , Pre-Workout Amped Powder?

Optimum Nutrition , Pre-Workout Amped Powder contains 12 active ingredients: Vitamin C (as ascorbic acid) (267.0 mg), Vitamin D (as cholecalciferol) (25.0 mcg), Calcium (40.0 mg), Magnesium (28.0 mg), Chloride (220.0 mg), Sodium (230.0 mg), and 6 more. Notable high-dose ingredients include Vitamin C at 297% DV. Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Optimum Nutrition , Pre-Workout Amped Powder safe to take?

Optimum Nutrition , Pre-Workout Amped Powder, Tropical Fury, High Stim, Sugar-Free, Caffeine has been analyzed for ingredient safety across all its components. Always consult your healthcare provider before starting any new supplement, especially if you take medications or have underlying health conditions.

Is Optimum Nutrition a trustworthy supplement brand?

Optimum Nutrition receives a brand trust score of 92/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 1986 and headquartered in Downers Grove, IL, United States, the company offers 95 products in their lineup. They hold 9 verified certifications including Consumerlab, Informed Sport, Labdoor, Nsf Certified For Sport. Third-party certifications are independently verified and indicate the brand meets specific quality, purity, and manufacturing standards. Note: Optimum Nutrition has 5 historical regulatory incidents on record, which are factored into the trust score.

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Disclaimer: GoodSupp provides independent supplement quality analysis for informational purposes only. Scores are generated algorithmically based on ingredient profiles, brand certifications, and public records. This is not medical advice. Always consult a healthcare professional before starting any supplement regimen. Product data is sourced from manufacturer labels and public databases. GoodSupp is not affiliated with any supplement brand.