High dose of zinc: 25 mg of zinc bisglycinate per tablet, high-quality chelated. Long-lasting supply: 400 tablets, over 13 months. High bioavailability (up to 40% more than gluconate). Wide benefits: Contributes to metabolism, immune system, skin, hair, nails, bones, and vision. Pure and vegan: No additives, lactose, gluten, or preservatives. No animal-derived ingredients. Quality guaranteed: Manufactured in Germany under ISO and HACCP standards. Laboratory tests and certificates available.