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. 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.

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

Provides antioxidant protection

Supports mucous membrane health

Per 2 capsules

Proprietary blend 540 mg

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

Adults: Take 2 capsules twice daily