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

Name: E.S.P. Extreme Energy Stimulant Pre-Workout, Fruit Punch, 10 oz (275 g)
Brand: Metabolic Nutrition
Rating: 2.4 (1 reviews)

What We Researched

19 active ingredients analyzed · 10 inactive ingredients decoded · 2 retailers compared · Last updated: Mar 2026

Product Score Poor

Product Analysis

Transparency Excellent

Supplement Facts

Ingredient	Amount	% 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 Very Poor

Fillers & Additives

Citric Acid
Sucralose
Sodium Citrate
Acesulfame K
Fruit punch flavor
Maltodextrin
Silica
Fd&c red 40 alum lake High
Fd&c red 40 alum lake High
Fd&c red 40 color powder 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.

Fruit punch 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 red 40 alum lake Unknown

Fd&c red 40 color powder Unknown

Price Comparison

iHerb $32.48

Best Price

Target $41.99

Price History

Tracked across major retailers. Updated periodically.

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

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, Fruit Punch a good supplement?

Metabolic Nutrition E.S.P. Extreme Energy Stimulant Pre-Workout, Fruit Punch, 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 10 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, Fruit Punch?

Metabolic Nutrition E.S.P. Extreme Energy Stimulant Pre-Workout, Fruit Punch 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, Fruit Punch safe to take?

Metabolic Nutrition E.S.P. Extreme Energy Stimulant Pre-Workout, Fruit Punch, 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.