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 Herbal Plus Energy Formula 100 Capsules
GNC4.4(131)$26.99GNC Mega Men Energy Metabolism
GNC4.3(42)$59.99GNC Men's Mega Multivitamin
GNC4.7(16)$34.99GNC Women’s Energy and Metabolism Multivitamin Caplets Clinically Proven
GNC4.5(132)$34.99GNC Women's Energy and Metabolism Vitapak Program V2 (1 Monthly Supply) - 30 Count
GNC4.3(132)$59.99GNC Mega Men Energy & Metabolism Multivitamin Vitamin C
GNC4.4(113)$47.99GNC Herbal Plus Triple Ginsa Rush Energy and Vitality Support Supplement
GNC4.2(14)$44.99GNC Women's Multivitamin Energy & Metabolism 180 Caplets
GNC4.6(22)$47.99
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.
ITL Health
5.0 (37)Vitamin & Supplements Shop
50 Broadway, London SW1H 0BL
Minerva Wellness
5.0 (21)Vitamin & Supplements Shop
71-75 Shelton St, London WC2H 9JQ
Holland & Barrett - Strand
3.7 (51)Vitamin & Supplements Shop
406-408 Strand, London WC2R 0NE
Aphro-D
4.9 (82)Vitamin & Supplements Shop
27 Old Gloucester St, London WC1N 3AF
Vitopia
4.9 (57)Vitamin & Supplements Shop
18 Wimpole St, London W1G 8GD
Protiv Nutrition
5.0 (1)Vitamin & Supplements Shop
3rd Floor, 207 Regent St., London W1B 3HH
RightNutri
4.9 (78)Vitamin & Supplements Shop
26 Queenstown Rd, London SW8 3RX
Nayble Health & Sports
5.0 (139)Vitamin & Supplements Shop
18 Chamberlayne Rd, London NW10 3JD
Research & Studies
A 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 citationsClinical implications of herbal supplements in conventional medical practice: a US perspective
H Gashaw, B Gizeshwork, KG Carrera, RO Iriowen… - Cureus, 2022 - search.proquest.com
… general nutrition centers (GNC), nutrition stores, and supplement retail outlets (… supplements containing ephedrine alkaloids” [65]. Marketed as a weight-loss and energy-enhancement …
2022149 citationsBioactive foods and nutraceutical supplementation criteria in cardiovascular protection
R Sharma, RB Singh - Open Nutraceuticals J, 2010 - benthamopenarchives.com
… or whole plants to keep energy balance in the body and … factor in cardiovascular disease. The nutraceuticals have been reported as inhibitors of cholesterol synthesis and enhancing …
201039 citationsA combinatorial siRNA and mRNA approach for obesity treatment using targeting lipid nanoparticles
W Stewart, B Hu, F Li, J Huang, Z Liu, C Zhang… - Journal of Controlled …, 2025 - Elsevier
… Obesity, a widespread global health issue affecting millions, is characterized by excess fat … promoting adipocyte differentiation and enhancing adaptive thermogenesis within adipocytes, …
202514 citationsEnergy drink consumption can induce cardiovascular events, two case reports and a literature review
M Chami, S Di Primio - Toxicologie Analytique et clinique, 2024 - Elsevier
… While they are often marketed as a way to increase energy and improve performance, they … risk factors for adverse cardiovascular events associated with ED consumption. Healthcare …
202419 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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