Energy Enhancer N.O.®
Other CombinationsBrand: GNC Pro Performance AMP
Functions
Net Contents
N/A
Serving Size
3 Tablet(s)
Servings Per Container
Not specified
Supplement Form
Tablet or Pill
Bar Code (UPC/SKU)
Not specified
Product Version
CODE 331311 CMG
Label Analysis
Objective insights generated automatically from the official DSLD label — a quick, factual read of how this product is formulated and disclosed.
4 distinct active ingredients are disclosed in Supplement Facts.
Every active ingredient discloses a specific amount per serving.
1 ingredients report an established %DV per serving.
Label states: Gluten-Free.
This analysis is generated algorithmically from label data for educational reference only. It is not a product endorsement, ranking, or medical advice.
Allergen Guide
Free From
- Milk
- Wheat
- Gluten
Allergen flags are parsed automatically from the official label's claims and statements. Always verify against the physical product label before use, especially if you have a severe allergy.
Supplement Facts
Serving Size: 3 Tablet(s) · 1 per day
| Ingredient | Amount Per Serving | % Daily Value |
|---|---|---|
| Niacin | 10 mg | 50% |
| L-Arginine, Micronized | 1500 mg | — |
| MegaNatural(R)-BP(TM) Grape Seed Extract | 300 mg | — |
| PEG | 150 mg | — |
Not Present
Other Ingredients
Target Groups
Label Claims
Directions & Suggested Use
Suggested/Recommended/Usage/Directions
DIRECTIONS: As a dietary supplement, take the contents of one pak 30-60 minutes pre-workout. On non-training days, take the contents of one pak first thing in the morning with food. Do not exceed one pak daily.
Warnings & Precautions
Precautions re: Pregnant or Nursing or Prescription Medications
Consult your physician prior to using this product if you are pregnant, nursing, taking medication, allergic or contraindicated to aspirin, or have a medical condition. Discontinue use two weeks prior to surgery, or if upset stomach occurs.
Precautions re: Pregnant or Nursing or Prescription Medications
Consult your physician prior to using this product if you are pregnant, nursing, taking medication, allergic or contraindicated to aspirin, or have a medical condition. Discontinue use two weeks prior to surgery, or if upset stomach occurs.
Precautions re: Children
KEEP OUT OF REACH OF CHILDREN.
Storage
Storage
Store in a cool, dry place.
Formulation
Formulation re: Does NOT Contain
No Wheat, No Gluten, No Dairy, Yeast Free.
FDA Statements
FDA Disclaimer Statement
* These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
FDA Statement of Identity
Dietary supplement
Other Label Statements
General Statements: All Other Content
In a randomized, double blind, placebo controlled study, 50 healthy untrained male volunteers were given Energy Enhancer N.O. or a placebo. Each subject exercised on a cycle ergometer prior to receiving the supplement or placebo and again after the treatment period was finished. Those subjects supplemented with Energy Enhancer N.O. had a 20% increase in PWCFT (physical working capacity at the fatigue threshold) after four weeks of supplementation relative to the placebo group.
General Statements: All Other Content
ACTUAL SIZE
General Statements: All Other Content
Energy Enhancer N.O.
General Statements: All Other Content
Energy Enhancer N.O. – This advanced nitric oxide product provides 1.5g of micronized arginine and is included to help increase your power output at the onset of fatigue 20%.† It’s clinically studied and designed to enhance blood flow and amplify your intense workouts.* Technologically enhanced for better absorption to maximize muscle performance capacity and give your body the push it needs to go above and beyond your regular workouts.
Brand IP Statement(s) re: (c), (TM), (SM)
MegaNatural(R)-BP(TM) and its logo are trademarks of Constellation Wines U.S., Inc.
Seals/Symbols
MegaNatural(R)-BP
General Statements: All Other Content
GNC QUALITY COMMITMENT GNC, the leader in the development and manufacture of dietary supplements, is committed to producing the highest quality products available. This commitment begins with quality designed supplement formulations. Every raw material that goes into a GNC supplement is guaranteed as to quality and potency. Each product is dated and then shipped immediately to our stores, so you can be sure you are purchasing the freshest supplements available. At GNC, we extend our quality commitment to you by offering our money-back guarantee.
General Statements: All Other Content
To maximize total endurance and energy support, use with: • Amplified Endurance Booster – loaded with electrolytes, carbohydrates and BCAA to replenish glycogen stores fast* • Amplified 100% Whey Protein – with fast-absorbing protein to fuel your training*
Brand IP Statement(s) re: (c), (TM), (SM)
The Pro Performance(R) AMP Endurance Vitapak(R) Program Evolution Driving this elite performance breakthrough is a mechanism that supports enhanced blood flow and oxygen uptake at the most critical time during training – at the onset of fatigue. Using an unmatched clinically proven module, it unleashes a 20% boost in workout intensity.† Most athletes today are not combining the proper combinations and ratios of critical sports nutrition. This system, used by elite runners, cyclists and other hardcore athletes, delivers precisely what muscles need to fuel difficult training, help your body recover and prepare to do it again. This exclusive nutrient system amplifies total muscle performance, increases intensity at the onset of fatigue, fuels cardio training, improves performance and ramps up energy production.* Mega Men(R) Sport – This high-potency clinically studied^ sports multivitamin formula includes critical components to fill important nutrient gaps in regular supplementation programs. Mega Men(R) Sport contains B-vitamins that are important for energy production and carbohydrate metabolism.* It provides amino acids, including BCAA, and a joint cushioning blend for healthy joint cartilage.* Also features a broad spectrum of cell-protecting antioxidants and nutrients that aid in boosting immunity.*
General Statements: All Other Content
Clinically Researched^
Brand IP Statement(s) re: (c), (TM), (SM)
What is Pro Performance(R) AMP Endurance Vitapak(R) Program? The power to endure intense physical training and extreme cardiovascular sessions requires absolute fine-tuning of your sports nutrition regimen to enable the body to perform at peak levels. The most perfectly trained athletes know that you must have an effective, targeted and balanced nutrition regimen to achieve maximum training benefits. GNC Scientists have created the breakthrough Pro Performance(R) AMP Endurance Vitapak(R) Program. The unparalleled power of over 50 premium, athletic-boosting ingredients combine together to amplify physical and mental intensity, delivering a total performance boost of 20%. This powerful combination of a daily premium multivitamin, sports nutrients and clinically studied ingredients delivers the edge athletes want to perform.
General Statements: All Other Content
ADVANCED MUSCLE PERFORMANCE
General Statements: All Other Content
ADVANCED SPORTS VITAMIN SYSTEM TO AMPLIFY ENDURANCE WITH OVER 50 POWERFUL INGREDIENTS*
General: Product/Version Code
CODE 331311 CMG
General Statements: All Other Content
Daily Endurance Energy Stamina
General Statements: All Other Content
Each pak contains:
General Statements: All Other Content
GNC GUARANTEE Use any GNC supplement for as little as 10 days. If you are not 100% completely satisfied, return the unused portion of the product with proof of purchase to your GNC store for a complete refund of your purchase price. No questions asked!
Manufacturer & Distributor
Other
1-888-462-2548
Distributor
General Nutrition Corporation
Pittsburgh, PA, 15222
Distributor
Market Reference
GNC AMP Ultra Nox Stim-Free Performance 120 Tablets
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GNC4.2(387)$49.99GNC AMP 60 Tablets for 30 Servings
GNC4.1(18)$39.99GNC AMP Creabolic Unflavored 30 Servings
GNC4.2(20)$49.99GNC AMP Men's Extreme Training Vitapak Program
GNC3.8(23)$59.99Gnc Amp Strength Vitapak
GNC$59.99GNC AMP Men's Strength Vitapak Program
GNC4.6(62)$59.99GNC AMP Amplified Hydration Electrolyte
GNC4.3(48)$29.99
Where to Buy Locally
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Supplement Hub
4.0 (6)Vitamin & Supplements Shop
The Old Chapel, 8 Mortimer St, Sheffield City Centre, Sheffield S1 4SF
Research & Studies
… phytonutrient-enriched electrolyte formulation, in enhancing neuro-muscular synergy, immune competence, cellular aerobic glycolysis and sports performance
B William Downs, SP Banik, BS Morrison… - BIO web of …, 2025 - bio-conferences.org
… , a traditionally used ergogenic supplement in sports nutrition … health and sports performance [1, 2]. Generally, an athlete’s … electrolytes, micronutrients and NO booster without the …
2025Contaminación y efectos secundarios en suplementos deportivos (proteínas, aminoácidos, creatina y suplementos para la pérdida de peso).
M Muñoz López - 2014 - oa.upm.es
… Una etapa no sólo mía, si no una etapa común que empezó hace más de 25 años cuando Mario y Mari Jose decidieron ser padres. Durante este cuarto de siglo han ocurrido muchas …
20142 citationsThe dark side of energy drinks: a comprehensive review of their impact on the human body. Nutrients. 2023; 15: 3922
A Costantino, A Maiese, J Lazzari, C Casula… - 2023 - academia.edu
… or chronic abuse of energy drinks on human health. The … These products are marketed as enhancers of mental acuity … literature of people with no known medical conditions who have …
20238 citationsThe impact of engineered silver nanomaterials on the immune system
N Ninan, N Goswami, K Vasilev - Nanomaterials, 2020 - mdpi.com
… have been incorporated in a number of other commercial products which may or may not … such products raises important questions about a possible adverse influence on human health. …
202090 citationsEnlarging the Regulation of Shrinking Cosmetics and Sunscreens
RF Wilson - 2011 - papers.ssrn.com
… effects on human and environmental health."7 Indeed, “[t]lie … on damaged skin’ and exploit penetration enhancers "18 - - … nanoparticles in their products without much interference from …
20112 citationsFunctional foods: formulation, fortification, and combating COVID-19
M Nag, F Siddiqua, N Baruah, S Das… - The Functional …, 2024 - taylorfrancis.com
… In order to age without much health complication, proper nutrition is a must, without which … due to intake of wrong food products, which can worsen the health condition. Therefore, it is …
20244 citations
Data sourced from the U.S. National Institutes of Health, Office of Dietary Supplements Dietary Supplement Label Database (DSLD) · Label entered 2012-02-23. DSLD Label ID: 5819. This information is provided for educational reference only and is not medical advice. Always follow the product label and consult a doctor or pharmacist before use.
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