3rd Party Lab Tested for Purity & Quality. 100 mg of Vitamin B-2 per Tablet - 180 Tablets per Bottle. Non-GMO & Gluten Free. Proudly Made in USA, GMP Compliant, FDA Registered Facility. No Artificial Color, Flavor, or Sweetener, No Preservatives, No Sugar, No Milk, No Corn, No Soy, No Egg, No Lactose, No Gluten, No Wheat, No Yeast, No Fish. Sodium Free.