General Nutrition Centers, also known as GNC specialises in health and nutrition related products, including vitamins, supplements, minerals, herbs, sports nutrition, diet, and energy products. The company has stores operating across major parts of the US. GNC assures of expedited assistance to address consumer grievances. To get in touch with GNC customer service representatives with regard to relevant concerns and queries, kindly refer to given contact information: GNC Customer Service Number: 1-877-462-4700 GNC Customer Service Hours: 9:00 a.m. - 8:00 p.m. EST Monday - Friday / 9:00 a.m. - 7:00 p.m. EST Saturday and Sunday GNC Customer Service Email: customerservice@gnc.com GNC Customer Support Email: info@gnc.com GNC Sales Customer Service Email: sales@gnc.com Customers seeking assistance online can also refere to GNC Online Chat Q: What is the GNC customer service number? A: The GNC customer service number is 1-877-462-4700. Q: What are the customer service hours for GNC? A: The c