KAL Defender C™ Description Optimal Vitamin C Formula With Immune Supportive Elderberry Clinical Lifestyles Defender C™ is a comprehensive Vitamin C formula intended to provide nutritive support for immune health. Directions Use only as directed. Take 2 tablets daily, preferably with a meal. Store in a cool, dry place. *These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.