Nutritional stores like Vitamin Shoppe, and GNC specialize in nutritional herbs, and many times the sales people are more knowledgeable about the use of herbs than sales people in a grocery store.
Health food stores and other retail outlets such as GNC carry slipper elm supplements.
If you have never used this remedy before, you may want to go to your local supplement store such as the Vitamin Shoppe or GNC and talk to the consultants.
Prevagen is also sold at Rite Aid, a nationwide chain of drug stores; at General Nutrition Centers (GNC) and at select natural foods stores.
Most of these items are available at health food stores such as GNC.