Natural D-Hist®

The Natural D-Hist® formula includes optimal support for nasal and sinus passageways for individuals who anticipate seasonal changes. Also available in convenient blister packs.
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.
Ortho Molecular Products' logo, text, trademarks, graphics, and photo images are the property of Ortho Molecular Products, Inc. and are used with permission. Copyright © 2026.
*FDA Disclaimer: The information about this product and statements made are provided by the manufacturer, except customer reviews which are not evaluated. See www.orthomolecularproducts.com for information about the relationship between this product and any claims made. Results may vary from person to person based on body size and other factors, and the effectiveness is not guaranteed for you. Always seek the advice of your healthcare professional about taking dietary, nutritional, herbal or homeopathic supplements.
The Natural D-Hist® formula includes optimal support for nasal and sinus passageways for individuals who anticipate seasonal changes. Also available in convenient blister packs.
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.
Ortho Molecular Products' logo, text, trademarks, graphics, and photo images are the property of Ortho Molecular Products, Inc. and are used with permission. Copyright © 2026.
*FDA Disclaimer: The information about this product and statements made are provided by the manufacturer, except customer reviews which are not evaluated. See www.orthomolecularproducts.com for information about the relationship between this product and any claims made. Results may vary from person to person based on body size and other factors, and the effectiveness is not guaranteed for you. Always seek the advice of your healthcare professional about taking dietary, nutritional, herbal or homeopathic supplements.
Loading Dose: 2 capsules three times per day for 7-10 days or as recommended by your health care professional.
Maintenance: 2 capsules per day or as recommended by your health care professional.