Energy Enhancer™
Other CombinationsBrand: GNC Longevity Factors
Net Contents
90 Caplet(s)
Serving Size
3 Caplet(s)
Servings Per Container
30
Supplement Form
Other (e.g. tea bag)
Bar Code (UPC/SKU)
Not specified
Product Version
CODE 724921 LKG
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.
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
- Soy
- 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 Caplet(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 three caplets daily.
Warnings & Precautions
Precautions re: Children
KEEP OUT OF REACH OF CHILDREN.
Precautions re: Pregnant or Nursing or Prescription Medications
WARNING: Consult your physician prior to using this product if you are pregnant, nursing, taking medication, or have a medical condition. Discontinue use two weeks prior to surgery.
Storage
Storage
Store in a cool, dry place.
Formulation
Formulation re: Does NOT Contain
No Sugar, No Artificial Colors, No Artificial Flavors, No Preservatives, No Wheat, No Gluten, No Soy, No Dairy, Yeast Free.
FDA Statements
FDA Statement of Identity
DIETARY SUPPLEMENT
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.
Other Label Statements
General Statements: All Other Content
^In a 4 week randomized, double blind, placebo controlled study of 50 healthy untrained male volunteers ages 19-29, subjects were supplemented with either one of two doses of Energy Enhancer or placebo. After 4 weeks of treatment, the subjects taking Energy Enhancer experienced significant increases in PWCFT (physical working capacity at the fatigue threshold) over the placebo group.
General Statements: All Other Content
Caffeine-free formula with antioxidants and amino acids to support your body's natural energy and help you feel better throughout the day*
General Statements: All Other Content
Clinically Researched Ingredients
General: Product/Version Code
CODE 724921 LKG
General Statements: All Other Content
Conforms to USP<2091> for weight.
General Statements: All Other Content
Easy to Swallow
General Statements: All Other Content
Energy Enhancing Blend – this caffeine-free energy formula helps invigorate your body so you can push through your day! It’s not a stimulant that will make you shake out of your shoes. It provides ingredients that play important roles in energy metabolism- that’s how your body uses energy.* In a clinical study, this formula helped to delay muscle fatigue when taken daily.^
General Statements: All Other Content
GNC GURANTEE 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!
General Statements: All Other Content
GNC QUALITY COMMITMENT For more than 75 years GNC has been dedicated to helping health conscious consumers Live Well. As the leader in nutritional supplement industry, we have remained committed to producing the highest quality and scientifically advanced products available on the market. This commitment begins with our scientific research and product development then continues through to the raw material procurement, manufacturing, packaging and transportation of the finished product. We take pride in our commitment to ensuring quality and we extend our confidence to you in our money-back guarantee.
General Statements: All Other Content
Invigorate your body
General Statements: All Other Content
NEW
General Statements: All Other Content
Please recycle this box.
General Statements: All Other Content
Polyphenols – includes powerful antioxidant protection from grape seed extract that’s packed with polyphenols which can help combat the free radicals associated with cell-aging.*
Brand IP Statement(s) re: (c), (TM), (SM)
Dr. Joseph Maroon and Longevity Factors(TM) "You can’t stop aging. But you can age well." Dr. Joseph Maroon is a world-renowned neurosurgeon, sports medicine specialist, nutritional expert and author. Together with GNC, Dr. Maroon developed the breakthrough Longevity Factors(tm) line of products that work to support healthy aging. Living proof of his theories, Dr. Maroon has participated in over 70 triathlons and 6 Ironman Championships.
Brand IP Statement(s) re: (c), (TM), (SM)
GNC Longevity Factors(TM) Energy Enhancer Premium formula. Clinically researched ingredients. Physician endorsed.
Brand IP Statement(s) re: (c), (TM), (SM)
Longevity Factors(TM) Energy Enhancer “Don’t let tiredness get in your way. With age, both your metabolism and energy levels begin to decline. The ingredients in this formula can assist your body in enhancing energy level.”* -Joseph Maroon, M.D.
Brand IP Statement(s) re: (c), (TM), (SM)
MegaNatural(R) -BP(TM) and its logo are trademarks of Constellation Wines U.S., Inc.
Manufacturer & Distributor
Other
1-888-462-2548
Distributor
General Nutrition Corporation
Pittsburgh, PA, 15222
Other
Market Reference
GNC Mega Men Energy & Metabolism
GNC4.5(1100)$29.99
GNC Herbal Plus Energy Formula 100 Capsules
GNC4.4(130)$26.99
GNC Mega Men Energy & Metabolism Multivitamin Vitamin C
GNC4.5(1100)$47.99
Gnc Women's Energy and Metabolism Vitapak Program
GNC4.3(131)$59.99
GNC Women’s Energy and Metabolism Multivitamin Caplets Clinically Proven
GNC4.5(332)$34.99
GNC Mega Men Energy & Metabolism Multivitamin
GNC4.5(1100)$34.99
GNC Mega Men Energy & Metabolism Vitapak Program V2
GNC4.4(185)$59.99
GNC Herbal Plus Panax Ginseng Capsules 600mg 100 ct
GNC4.3(37)$39.99
Where to Buy Locally
Enter your city or ZIP code to find supplement & health stores in your area that may carry this product.
Showing representative supplement & health retailers — search above for stores in your area.
GNC
3.6 (51)Vitamin & supplements store
1127 S Gutensohn Rd, Springdale, AR 72762
IV Nutrition - Fayetteville
4.9 (230)Vitamin & supplements store
3379 N College Ave, Fayetteville, AR 72703
IV Nutrition - Rogers
4.9 (263)Vitamin & supplements store
5100 W Pauline Whitaker Pkwy #105, Rogers, AR 72758
Envision Nutrition
4.8 (62)Nutritionist
204 W Walnut St, Rogers, AR 72756
GNC
4.1 (53)Vitamin & supplements store
2012 S Promenade Blvd #6, Rogers, AR 72758
Natural Grocers
4.5 (512)Vitamin & supplements store
4116 N College Ave, Fayetteville, AR 72703
NutraFuel Smoothie Bar
4.9 (87)Health food restaurant
5320 W Sunset Ave STE 185, Springdale, AR 72762
Westside Healthmart Pharmacy
4.7 (88)Pharmacy
3819 W Sunset Ave, Springdale, AR 72762
Research & Studies
Growth factors: proper nutrition, training, rest, and supplementation-including Growth Factor-9-will help spike your GH levels for better muscle-building gains
A Gonzalez - Joe Weider's Muscle & Fitness, 2015 - go.gale.com
… as an injectable performance-enhancing drug, GH has been … a youthful appearance and longevity. Following a clean diet, … or at supplement retailers everywhere, including GNC and …
2015Gengnianchun, a Traditional Chinese Medicine, Enhances Oxidative Stress Resistance and Lifespan in Caenorhabditis elegans by Modulating daf‐16/FOXO
F Meng, J Li, W Wang, Y Fu - Evidence‐Based Complementary …, 2017 - Wiley Online Library
… properties, the potential to extend longevity, or both, in vivo … concentrations of GNC at 20C (we chose GNC doses of … In contrast, significant lifespan enhancement was maintained in …
201724 citationsOptimum aging with nature's hormone enhancing nutrients.(Age Management and Longevity)
VC Giampapa - Psychology Today, 2003 - go.gale.com
… to longevity and a quality life span is to address the factors, … in body fat, an increase in muscle mass and improved energy. … GNC, Vitamin Shoppe, Vitamin World and many other health …
2003Boosting NAD+ for Anti-Aging: Mechanisms, Interventions, and Opportunities
F Alpay - 2025 - chemrxiv.org
… healthspan – for example, by enhancing mitochondrial energy … and survival on a high-fat diet and modestly improved longevity … and endurance in daily activities – all factors that would …
20254 citationsA Study on Integrating Product Innovation & Marketing for Sustainable Growth with reference to Nutraceutical Companies
N Pamukçu - 2025 - norma.ncirl.ie
… The rising life expectancy and health trends that involve … by enhancing overall health and handling various health issues … and nutrient bioavailability is the GNC (General Nutrition …
2025Anti-ageing natural supplements: the main players in promoting healthy lifespan
M Izadi, N Sadri, A Abdi, MMR Zadeh… - Nutrition Research …, 2025 - cambridge.org
… a role in promoting longevity and enhancing the quality of life … contribute to healthy ageing and longevity through their … further improve cardiovascular health and energy metabolism. A …
20256 citations
Data sourced from the U.S. National Institutes of Health, Office of Dietary Supplements Dietary Supplement Label Database (DSLD) · Label entered 2011-11-25. DSLD Label ID: 2108. 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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