From the Manufacturer's Label:
Ester-C® is a breakthrough patented Vitaminc C formula supported with naturally occurring metabolites. Metabolites help enhance the retention of Vitamin C by your white blood cells, an important part of your immune system.* Ester-C®'s unique, chemical free manufacturing process neutralizes pH, making it non-acidic and gentle on the stomach. In a daily 1,000 mg dose, Ester-C® delivers 24-hour immune support...so once a day is all you need.*
About Puritan’s Pride
For more than 40 years, Puritan's Pride has helped families achieve a lifestyle of wellness. Our vitamins and supplements are made with care from the highest quality ingredients. They are tested or inspected as many as 15 times throughout the manufacturing process. That's why you can shop with confidence. We take pride in our products and helping customers feel their best.
No Gluten, No Yeast, No Wheat, No Milk or Milk Derivatives, No Lactose, No Soy, No Egg, No Grapefruit, No Sugar, No Preservatives, No Artificial Color, No Artificial Flavor, No Sodium. Non-GMO. Suitable for Vegan.