Natural D-Hist

The Natural D-Hist® formula includes optimal support for nasal and sinus passageways for individuals who anticipate seasonal changes. Clinical Applications Supports Immune Balance in Hypersensitive Individuals Supports Sinus and Respiratory Health Promotes Normal Viscosity of Mucus Clears Nasal Passages Natural D-Hist® is a targeted blend of flavonoids, antioxidants, proteolytic enzymes and botanicals designed to provide comprehensive support for seasonal challenges caused by common environmental allergens. The formula includes quercetin, bromelain, stinging nettles leaf, and N-acetyl cysteine. The powerful combination actively promotes healthy nasal and sinus passages for individuals with elevated histamine and respiratory irritation. Quercetin Quercetin has strong antioxidant activity and has been shown to support immune health by mediating the release of inflammatory compounds including leukotrienes and prostaglandins. Quercetin is known for its ability to stabilize mast cells