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Powerful antioxidants help support the health of the airway passages and mucous membrane. Stinging nettle, quercetin, bromelain and bitter orange offer natural help with seasonal irritants. This powerful blend enhances immune function and inhibits the release of histamine and other inflammatory compounds that initiate the sneezing, swelling and itching of allergic reactions.

HistaBlock can be used to safely manage allergy symptoms and support breathing, without the side effects commonly associated with over-the-counter and prescription antihistamines, decongestants and nasal sprays.


  • Indications for use

    Provides nutrients that support the respiratory system in its battle against allergens, pollutants and toxins

    Provides antioxidant protection

    Supports mucous membrane health

    Supports healthy mucous membranes



  • Ingredients

    Per 2 capsules

    Proprietary blend 540mg

    Nettle leaves (Urtica dioica)

    Quercetin (from Sophora japonica fruit) 

    Bitter Orange Fruit (Citrus x aurantium)

    Bromelain (from pineapple fruit, Ananas comosus)

    Other ingredients: Dicalcium phosphate, capsule (gelatin, water), cellulose, vegetable magnesium stearate, silicon dioxide

  • Recommended Dose

    Take 2 capsules twice daily

  • Cautions

  • Further Information

Price Quantity
$43.60 x
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