ULTRA-PURE Sodium Ascorbate, harnesses the intrinsic sodium/potassium pump to provide increased intracellular bioavailability compared to traditional Ascorbic Acid formulations. ULTRA-C is based on Dr. Robert Cathcart’s time-honored method, which provides practitioners with a cost effective, optimal potency, extended shelf-life, and clinically superior pH neutral, and naturally buffered product. 100% Pure Pharmaceutical Grade ULTRA-PURE Sodium Ascorbate Pre-Buffered Bacteriostatic Crystalline Powder Non-GMO Source Vitamin-C Increased Bioavailability pH Neutral cGMP Compliant 50g Sodium Ascorbate Crystalline Powder No-Waste Clear PET Bottle Up to 24-Months Shelf Life Stores at Room Temperature 3-Stage Analytical Testing and Quality Control performed by a 3rd Party US Based FDA Registered Analytical Laboratories Processed and packaged in the USA Store away from heat, humidity, and light. Keep out of reach of children.