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Natural D-Hist Default Category Ortho Molecular 120 Capsules
Natural D-Hist Default Category Ortho Molecular
Natural D-Hist Default Category Ortho Molecular 40 Capsules
Natural D-Hist Default Category Ortho Molecular Blister Pack - 120 Capsules

    Natural D-Hist



    Ortho Molecular Natural D-Hist 

    Nasal and sinus support for the height of the growing season. Enjoy the outdoors once again! 

    For more information, check out our blog post - The All-Natural Survival Guide For The Allergy Season

    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 natural antihistamine 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
    • Clears Nasal Passages



    Naturally found in onions, quercetin is a mast cell stabilizer and a powerful natural flavonoid. Quercetin has been shown to inhibit certain compounds that typically affect sinus and respiratory health.

    Stinging Nettles Leaf

    Studies have shown stinging nettles have demonstrated both promising mechanisms and clinical results for supporting nasal passageway health. While further study is needed, trials have shown stinging nettles demonstrated measurable differences vs. placebo after only one week.


    A strong pineapple enzyme, bromelain has proven mucolytic properties. As such, bromelain supports normal mucousal tissue function and enhances the absorption of quercetin.

    N-Acetyl L-Cysteine (NAC)

    An amino acid that is a natural mucolytic, NAC reduces the viscosity of mucus. Studies have shown individuals have been treated effectively without side effects when given NAC.

    Suggested Use

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

    Maintenance: 1 or more capsules per day or as recommended by your health care professional

    More Info.

    Warning: Consuming this product can expose you to chemicals including lead, which is known to the State of California to cause birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov/food.

    Natural D-Hist has a rating of 4.9 stars based on 60 reviews.