Metabolic Nutrition E.S.P. Extreme Energy Stimulant Pre-Workout, Green Apple, 10 oz (275 g) supplement bottle
Metabolic Nutrition

E.S.P. Extreme Energy Stimulant Pre-Workout, Green Apple, 10 oz (275 g)

What We Researched
19 active ingredients analyzed · 9 inactive ingredients decoded · 1 retailer compared · Last updated: Mar 2026
47
Product Score Poor

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Extreme B-Vitamin & Electrolyte Matrix — —
Vitamin B12 165 mcg 6875%
Vitamin B6 (as Pyridoxine HCI) 1.4 mg 82%
Vitamin B3 6.6 mg 41%
Magnesium 50 mg 12%
Potassium 50 mg 1%
Calcium 50 mg 4%
Extreme Energy Matrix 356 mg —
Caffeine Anhydrous 200 mg **
Theobromine 100 mg **
Di-Caffeine Malate 56 mg **
Extreme Mental Matrix 967 mg —
Choline Bitratrate 667 mg **
N-Acetyl-L-Tyrosine 200 mg **
Eria Jarensis 100 mg **
Extreme Absorption Matrix 1,672 mg —
Beta Alanine 1,667 mg **
Black Pepper Extract 5 mg **
Bioavailability Good

Absorption Rating

  • Extreme B-Vitamin & Electrolyte Matrix Poor
  • Vitamin B12 Fair
  • Vitamin B6 (as Pyridoxine HCI) Fair
  • Vitamin B3 Good
  • Magnesium Good
  • Potassium Good
  • Calcium Good
  • Extreme Energy Matrix Poor
  • Caffeine Anhydrous Good
  • Theobromine Good
  • Di-Caffeine Malate Good
  • Extreme Mental Matrix Poor
  • Choline Bitratrate Poor
  • N-Acetyl-L-Tyrosine Good
  • Eria Jarensis Fair
  • Extreme Absorption Matrix Fair
  • Beta Alanine Good
  • Black Pepper Extract Good
Other Ingredients Poor

Fillers & Additives

  • Citric Acid
  • Sucralose
  • Sodium Citrate
  • Acesulfame K
  • Green apple flavor
  • Maltodextrin
  • Silica
  • Fd&c green sour apple lake High
  • Fd&c green apple shade High
Efficacy Poor

Dosage Analysis

  • Vitamin B12 165 mcg Effective
  • Vitamin B6 (as Pyridoxine HCI) 1.4 mg Under-dosed
  • Vitamin B3 6.6 mg Under-dosed
  • Magnesium 50 mg Under-dosed
  • Potassium 50 mg Under-dosed
  • Calcium 50 mg Under-dosed
  • Caffeine Anhydrous 200 mg Effective
  • Theobromine 100 mg Under-dosed
  • Di-Caffeine Malate 56 mg Under-dosed
  • Choline Bitratrate 667 mg Effective
  • N-Acetyl-L-Tyrosine 200 mg Under-dosed
  • Eria Jarensis 100 mg Under-dosed
  • Beta Alanine 1,667 mg Under-dosed
  • Black Pepper Extract 5 mg Effective

Supplement Facts

Ingredient Amount % Daily Value
Extreme B-Vitamin & Electrolyte Matrix
Vitamin B12 165 mcg 6875%
Vitamin B6 (as Pyridoxine HCI) 1.4 mg 82%
Vitamin B3 6.6 mg 41%
Magnesium 50 mg 12%
Potassium 50 mg 1%
Calcium 50 mg 4%
Sodium 11.5 mg 1%
Extreme Energy Matrix 356 mg
Caffeine Anhydrous 200 mg **
Theobromine 100 mg **
Di-Caffeine Malate 56 mg **
Extreme Mental Matrix 967 mg
Choline Bitratrate 667 mg **
N-Acetyl-L-Tyrosine 200 mg **
Eria Jarensis 100 mg **
Extreme Absorption Matrix 1,672 mg
Beta Alanine 1,667 mg **
Black Pepper Extract 5 mg **

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Citric Acid Safe

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

Sucralose Generally_safe

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

Sodium Citrate Safe

Stabilizes pH and helps maintain ingredient effectiveness.

Acesulfame K Generally_safe

It is used to add sweetness to supplements without adding calories.

Green apple flavor Unknown
Maltodextrin Generally_safe

Helps carry and stabilize active ingredients. Provides bulk.

Silica Safe

Prevents ingredients from clumping and improves powder flow.

Fd&c green sour apple lake Unknown
Fd&c green apple shade Unknown

Price Comparison

iHerb $12.62
Best Price

Price History

Tracked across major retailers. Updated periodically.

$14$13$12$11$10 Mar 12 $12.00
iHerb

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

Brand Trust Report
Metabolic Nutrition

Founded 1987 · Tamarac, Florida, United States · 113 products · metabolicnutrition.com/

Transparency

2 claims
In House Testing — Verified Source

Violation History

1 incident
Fda Warning Products Synedrex and E.S.P. Extreme were found to contain 2-aminoisoheptane (DMHA), an ingredient that the FDA considers to be a new dietary ingredient for which a New Dietary Ingredient notification is required and has not been submitted. The FDA stated that in the absence of such a notification, the products were considered adulterated.2019-04-10Source
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Frequently Asked Questions
Is Metabolic Nutrition E.S.P. Extreme Energy Stimulant Pre-Workout, Green Apple a good supplement?

Metabolic Nutrition E.S.P. Extreme Energy Stimulant Pre-Workout, Green Apple, 10 oz (275 g) received a product quality score of 47/100 in GoodSupp's independent analysis, indicating several areas of concern that consumers should review. The product contains 19 active ingredients Of the 9 inactive ingredients, 3 are rated safe and 0 are flagged for review.

What are the ingredients in Metabolic Nutrition E.S.P. Extreme Energy Stimulant Pre-Workout, Green Apple?

Metabolic Nutrition E.S.P. Extreme Energy Stimulant Pre-Workout, Green Apple contains 19 active ingredients: Extreme B-Vitamin & Electrolyte Matrix, Vitamin B12 (165 mcg), Vitamin B6 (as Pyridoxine HCI) (1.4 mg), Vitamin B3 (6.6 mg), Magnesium (50 mg), Potassium (50 mg), and 13 more. Notable high-dose ingredients include Vitamin B12 at 6875% DV. Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Metabolic Nutrition E.S.P. Extreme Energy Stimulant Pre-Workout, Green Apple safe to take?

Metabolic Nutrition E.S.P. Extreme Energy Stimulant Pre-Workout, Green Apple, 10 oz (275 g) 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.

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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.