About this item 3rd Part Lab Tested - Our All Best Naturals Products come with 3rd Party Independent Lab Tested Zinc Supplement supports healthy immune function Zinc Supports Enzyme Functions No Artiﬣial Color, Flavor or Sweetener, No Preservatives, No Sugar, No Starch, No Corn, No Soy, No Egg, No Lactose, No Gluten, No Wheat, No Yeast, No Fis Top quality GMP certified products - All Best Naturals products are manufactured in accordance with Good Manufacturing Practices (GMP), among the highest standards in the world -- Proudly Made in USA -- Purity & Potency. During the summer months products may arrive warm but Amazon stores and ships products in accordance with manufacturers' recommendations, when provided.