I am a senior citizen so it wasn't a surprise when I started lacking energy. I went to GNC and spoke with a lady that was extremely knowledgeable about the products. She told me to take something that I never would of considered. She also explained why it would work. She was right and it will be a permanent product. The place is clean, amply stocked and they have employees that are knowledgeable, professional and courteous. I highly recommend GNC, especially the one on Pleasant Hill Rd in Duluth. read more