• Respiratory system support
  • Quercetin may impact the effects of seasonal irritants and pollutants
  • May support healthy airway passages
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How It Works

HistaBlock provides nutrients that support healthy respiratory function as the body battles irritants, pollutants and toxins. Stinging nettle provides well-known support against seasonal airborne substances. This formula provides antioxidant strength to help stabilize mast cells. The antioxidant quercetin has been used for its reputed effects in supporting the respiratory system. Quercetin may help stabilize cells that release compounds when exposed to irritants. Bromelain is an enzyme that works to help reduce the swelling of mucous membranes during times of respiratory stress. Bitter orange contains synephrine, which helps the body support open airways.

Recommended Use

Take 2 capsules with a meal twice daily.


Nettle leaves, quercetin, Bitter orange fruit and bromelain.


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