The Natural D-Hist^® formula includes optimal support for nasal and sinus passageways for individuals who anticipate seasonal changes. 

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.

• Supports Immune Balance in Hypersensitive Individuals
• Supports Sinus and Respiratory Health
• Promotes Normal Viscosity of Mucus
• Supports Healthy Nasal Passages

Suggested Use:

Loading Dose: 2 capsules three times per day for 7-10 days or as recommended by your health care professional.

Maintenance: 2 or more capsules per day or as recommended by your health care professional.