CL-7 contains herbs that may benefit lung congestion and related disorders including chest colds, bronchial infections, and lung infections. The Herb Masters' Original Formulas. Since time began, dedicated Herb Masters have discovered the precious secrets of herbs from Nature. They skillfully developed valuable formulas with just the right balance of natural plants that were most effective. The Herb Masters' Original Formulas, only from Nature's Herbs. Our exclusive FreshCare System inhibits normal plant oxidation, maintaining product potency and extending freshness. It includes all-natural antioxidants in each capsule, oxygen-absorbing packets in each bottle, special air-tight seals and amber glass packaging for uncompromised quality. Unconditional Product Guarantee: Nature's Herbs unconditionally guarantees this completely natural product to your satisfaction. Nature's Herbs products are non-irradiated. Preservative free gelatin capsule.