From the Manufacturer's Label:
Ester-C® is a breakthrough patented Vitamin C formula supported with naturally occurring metabolites. Metabolites help enhance the absorption 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.* Added Citrus Bioflavonoids may help your body better absorb and utilize Vitamin C.*
^^Ester-C® stays in your white blood cells for up to 24 hours, which is longer than regular vitamin C. White blood cells are an important part of your immune system.
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.