GNC
About GNC
GNC, historically known as General Nutrition Centers, is a global health and wellness retailer headquartered in Pittsburgh, Pennsylvania. The company sells vitamins, minerals, protein powders, sports-nutrition products, creatine, pre-workout formulas, probiotics, herbal supplements, weight-management products, beauty supplements, functional foods, drinks, and other wellness products through stores, GNC.com, franchise locations, and retail partnerships. GNC traces its history to 1935 and continues to position itself around science-backed nutrition and wellness.
GNC operates through GNC Holdings, LLC following its 2020 financial restructuring. On October 7, 2020, Harbin Pharmaceutical Group Holding Co., Ltd., indirectly through ZT Biopharmaceutical LLC, acquired 100% of the equity interests in the reorganized GNC business. GNC consequently became privately held rather than remaining a publicly traded U.S. corporation.
GNC is currently led by Michael Costello, who became permanent Chief Executive Officer in September 2024 and remained CEO in the company’s March 2026 corporate announcements. GNC continues to expand its omnichannel business through stores, e-commerce, loyalty programs, marketplace partnerships, and international franchising.
Quick Information
Corporate Phone Number
GNC does not prominently publish a separate public headquarters switchboard for ordinary consumer inquiries.
For current Customer Service:
1-877-462-4700
Also written as:
1-877-GNC-4700.
Customer Service Number
1-877-462-4700
This is the primary current toll-free GNC Customer Service number for orders, loyalty accounts, returns, product inquiries, and general support.
Corporate Office Address
GNC Holdings, LLC
75 Hopper Place, Suite 501
Pittsburgh, PA 15222
United States
Headquarters Address
GNC
75 Hopper Place, Suite 501
Pittsburgh, PA 15222
United States
GNC’s June 30, 2026 Privacy Notice identifies this address for GNC Customer Service and corporate correspondence.
Customer Service: customer-service@gnc-hq.com
GNC materials have also used:
customer-service@gnc.com
Media: media@gnc-hq.com.
Industry
Health & Wellness Retail, Dietary Supplements, Sports Nutrition, Vitamins, Functional Nutrition and E-Commerce
Founded
1935
Current CEO
Michael Costello
Michael Costello was formally appointed permanent CEO in September 2024 and continues to lead GNC in 2026.
Ownership
Privately held
GNC is owned through the corporate structure established after Harbin Pharmaceutical Group Holding Co., Ltd. acquired the reorganized business in 2020.
International Presence
GNC reported an international network of more than:
1,400 locations
across:
50+ countries
in its international expansion announcement.
Number of Employees
GNC does not currently publish a precise standalone worldwide employee count on its main corporate website.
Because it is privately held, it no longer provides a U.S. public-company Form 10-K containing a standardized annual employee disclosure.
Corporate Office Hours
GNC does not publish standard public walk-in hours for its Pittsburgh headquarters.
Customers should contact Customer Service before attempting to visit.
Website
Store Locator
Investor Relations
Not applicable in the traditional public-company sense.
GNC is privately held and no longer has publicly traded GNC shares.
Careers Page
GNC recruits for retail stores, merchandising, marketing, digital commerce, supply chain, distribution, product development, quality, finance, technology, and corporate functions.
GNC Products & Services
GNC offers thousands of health, fitness, nutrition, and wellness products from both proprietary GNC brands and outside manufacturers. Its current online catalog includes more than 3,000 products across major nutrition categories.
Vitamins & Supplements
GNC sells more than 1,000 products within its broad vitamins and supplements category.
Products include single vitamins, minerals, multivitamins, antioxidants, omega fatty acids, age-specific formulas, and targeted wellness products.
Multivitamins
GNC carries men’s, women’s, children’s, senior, and general multivitamin products.
Major proprietary lines include GNC Mega Men and GNC Women’s formulas along with products from third-party supplement manufacturers.
Protein Powder
Protein is one of GNC’s largest categories, with hundreds of whey, plant, isolate, casein, clear-protein, and performance products.
GNC Pro Performance is one of the company’s long-standing proprietary sports-nutrition lines.
Whey Protein
GNC sells whey concentrate, whey isolate, and blended whey-protein powders.
Products are marketed for supplemental protein intake, exercise recovery, muscle support, and general nutrition.
Creatine
GNC carries a large assortment of creatine powders, capsules, blends, and performance formulas.
Current product listings include more than 170 creatine products across GNC and third-party brands.
Pre-Workout Supplements
Pre-workout products include stimulant and non-stimulant powders, nitric-oxide products, energy formulas, hydration products, and endurance-support supplements.
GNC’s performance category currently includes hundreds of items.
Sports Performance Products
GNC carries amino acids, muscle-support formulas, post-workout products, hydration, endurance supplements, and other sports-nutrition products.
The assortment serves recreational fitness customers as well as more performance-focused athletes.
Weight Management Products
GNC sells supplements, protein products, thermogenic formulas, meal-support items, and other products marketed within its weight-management category.
Current online inventory includes well over 100 weight-management products.
Digestion & Gut Health
GNC offers probiotics, digestive enzymes, fiber, prebiotics, gut-health blends, and related digestive-support products.
Its current catalog includes more than 200 digestion and gut-health products.
Probiotics
Customers can choose from daily probiotics, targeted formulas, women’s probiotics, digestive blends, and products with different probiotic strains and strengths.
Availability varies by brand and formulation.
Herbs & Natural Solutions
GNC sells hundreds of herbal and natural products, including ashwagandha, turmeric, herbal extracts, adaptogens, green-food products, and traditional wellness ingredients.
Fish Oil and Omega Products
GNC carries fish oil, omega-3 products, krill oil, and specialized fatty-acid supplements.
The company continues to develop proprietary GNC Omega products, including its newer Triple Strength Fish Oil formulas.
Beauty Supplements
Beauty and skin-care nutrition includes collagen, biotin, hair-skin-and-nails formulas, vitamins, antioxidants, and other ingestible beauty products.
GNC currently lists more than 100 items within the broader beauty and skin-care category.
Collagen
Collagen powders, capsules, liquids, and combination supplements are sold for customers interested in skin, hair, nails, joints, or general protein supplementation.
Men’s Health Products
GNC’s men’s health category includes multivitamins, protein, minerals, ashwagandha, testosterone-support formulas, joint products, energy supplements, and other targeted products.
Women’s Health Products
GNC carries women’s multivitamins, iron, calcium, beauty formulas, probiotics, prenatal products, stress-support supplements, and other targeted wellness products.
Food & Drink
GNC sells protein bars, shakes, snacks, energy drinks, hydration beverages, functional foods, and other nutrition-focused food and drink products.
Current online inventory contains hundreds of items in this category.
Energy Drinks
GNC sells ready-to-drink energy beverages from popular sports and lifestyle nutrition brands.
Products include traditional energy drinks, pre-workout beverages, and functional drinks.
GNC Pro Performance
GNC Pro Performance is a proprietary sports-nutrition line featuring products such as whey protein and creatine.
It remains a core GNC-owned product family.
GNC Mega Men
GNC Mega Men is the company’s men’s multivitamin family.
Products include standard and age-specific formulations such as Mega Men 50 Plus.
GNC Women’s
GNC Women’s products include multivitamins and targeted wellness supplements designed for women’s nutritional needs.
GNC Total Lean
GNC Total Lean is a proprietary weight-management and nutrition line.
Products can include shakes, supplements, snacks, and related items.
MYGNC Rewards
MYGNC Rewards is GNC’s free loyalty program.
Members can earn points on eligible purchases at GNC stores, GNC.com, and the GNC app and convert points into eligible rewards.
PRO ACCESS
PRO ACCESS is GNC’s paid premium loyalty tier.
Current benefits include 10% Cash Back Rewards, 20% Cash Back during PRO Days, free GNC.com shipping, and other member benefits for an annual membership price currently listed at $39.99.
Buy Online, Pick Up In Store
GNC offers Buy Online, Pick Up In Store at participating locations.
Stores can also support ship-from-store fulfillment as part of GNC’s omnichannel retail strategy.
Online Shopping
Customers can purchase products directly through:
GNC.com supports product search, subscriptions, delivery, loyalty benefits, promotions, and store pickup.
GNC Corporate Phone Numbers
Corporate Phone Number
GNC does not prominently publish a separate general-public headquarters switchboard.
Corporate Headquarters Number
For general consumer routing:
1-877-462-4700
Headquarters Number
1-877-462-4700
Corporate Office Number
No separate current public corporate-office line is prominently listed.
Customer Service Number
1-877-462-4700.
Customer Support Number
1-877-GNC-4700
MYGNC Rewards Support
1-877-462-4700.
PRO ACCESS Insider Line
1-866-214-2469
This number is specifically published for PRO ACCESS members seeking priority assistance.
Online Order Support
1-877-462-4700
Return Support Number
1-877-462-4700
Billing Number
GNC does not publish a separate general billing line.
Payment and order questions can be directed to:
1-877-462-4700
Privacy Number
1-877-462-4700
Privacy requests can also be submitted through GNC’s dedicated online privacy portal.
Privacy Email
customer-service@gnc-hq.com
Media Relations Number
412-246-9901
Current published media contact:
Nick Sero
Email:
media@gnc-hq.com.
Sales Number
GNC does not maintain a conventional nationwide consumer sales line.
Purchases are handled through stores, GNC.com, and retail partners.
Local Store Number
Individual stores have their own phone numbers.
Store Locator:
Regional Office Number
GNC does not publish one universal regional-office number.
International Number
International contacts vary by country and franchise operator.
Emergency / After-Hours Number
GNC does not publish a dedicated corporate emergency line.
Investor Relations Number
Not applicable.
GNC is privately held.
Human Resources Number
GNC does not prominently publish one universal public applicant HR number.
Careers:
How to Reach a Real Person at GNC
For orders, returns, Rewards, products, subscriptions, payment issues, or account questions, call 1-877-462-4700. PRO ACCESS members can use the dedicated priority support line at 1-866-214-2469. Have your order number, loyalty-account information, store receipt, product name, and purchase date ready when contacting support.
Customers can also email customer-service@gnc-hq.com. For a problem involving a specific store, contact the store manager first through the official Store Locator, particularly for local transactions, employee interactions, or in-store returns.
GNC Headquarters & Corporate Office Address
GNC’s current headquarters and Customer Service correspondence address is:
GNC Holdings, LLC
75 Hopper Place, Suite 501
Pittsburgh, PA 15222
United States
GNC’s current June 2026 Privacy Notice confirms this address.
Pittsburgh Headquarters
75 Hopper Place, Suite 501
Pittsburgh, PA 15222
GNC continues to describe Pittsburgh as its home base, and the company previously noted that its Pittsburgh flagship store sits less than one mile from the global headquarters.
Current Legal Entity
GNC Holdings, LLC
The current corporate organization resulted from GNC’s 2020 Chapter 11 restructuring and sale.
Current CEO
Michael Costello
He has served as permanent CEO since September 2024 and remained CEO in 2026 corporate announcements.
Current Ownership
GNC’s reorganized business was acquired by:
Harbin Pharmaceutical Group Holding Co., Ltd.
through:
ZT Biopharmaceutical LLC
in October 2020.
Acquisition Structure
Harbin, indirectly through ZT Biopharmaceutical LLC, purchased:
100% of the issued and outstanding equity interests in the reorganized GNC business.
Private Company Status
GNC is no longer publicly traded.
Its former public-company shares ceased to represent the reorganized operating business following the Chapter 11 restructuring.
International Scale
GNC reported:
1,400+ international locations
across:
50+ countries.
How to File a Complaint Against GNC
Customers filing a complaint about an online order, refund, supplement, store employee, Rewards account, recurring purchase, damaged product, promotion, or another GNC service should gather the order number, receipt, store location, product name, lot information where relevant, payment records, and previous Customer Service correspondence.
Step 1: Contact GNC Customer Service
Begin by calling 1-877-462-4700 or emailing customer-service@gnc-hq.com. Provide your order or receipt information, product details, purchase date, and a clear explanation of the complaint. If the issue involves a damaged or defective product, keep photographs and packaging available. Ask the representative to document the issue and explain the available return, refund, replacement, or account adjustment.
Step 2: Contact the Store Manager for Store Purchases
If the complaint involves an in-store purchase or employee interaction, contact the GNC location directly and request the store manager. Bring the original receipt where available and explain what occurred. Local management can generally address eligible returns, exchanges, transaction errors, and store-service complaints. Keep a record of the location and manager contacted.
Step 3: Request Additional Customer Service Review
If the first interaction does not resolve the issue, contact GNC Customer Service again and request further review. PRO ACCESS members can also use 1-866-214-2469 for priority support. Provide the previous case history, order information, photographs, and other documentation so the reviewing team has a complete record.
Step 4: Send Formal Written Correspondence
For a serious unresolved complaint, written correspondence can be sent to GNC Customer Service, 75 Hopper Place, Suite 501, Pittsburgh, PA 15222. Include your name, contact information, order or receipt details, product information, previous case history, and a chronological explanation of the issue. Attach copies rather than original documentation and keep proof of delivery.
Step 5: Use the Appropriate External Complaint Process if Necessary
If the complaint remains unresolved, the next external channel depends on the issue. Payment disputes may involve the card issuer, while product-safety or adverse-event concerns involving dietary supplements may fall under the U.S. Food and Drug Administration. General consumer complaints may also be filed with the appropriate state Attorney General or consumer-protection agency. Preserve receipts, packaging, lot information, photographs, and GNC responses before escalating.
