Pureline RGV is the official page for Pureline Nutrition Stores in McAllen and Brownsville Texas, (Rio Grande Valley.) Pureline is an exclusive store which carries only the Pureline Nutrition Brand. The products have been hand selected and designed to help people achieve there weight loss, physique and fitness goals faster. Pureline stores utilize Body Composition Testing Technology and Customized Meal Plans with Integrated Supplementation to help people achieve their fitness goals faster.