GNC Hours of Operation and Location in Sylmar, CA 91342

General Nutrition Corporation (GNC), founded in 1935, is an American commercial enterprise with more than 6,000 stores in the U.S. It includes 1,100 store-within-a-store locations within Rite Aid and some other locations in 49 other countries. It mainly does business on the retail sale of health and nutrition related products, including vitamins, supplements, minerals, herbs, sports nutrition, diet, and energy products.