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HistaBlock (90 caps)

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Price: $28.10
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Breathing & Allergies

Don’t let seasonal irritants and pollutants interrupt your life--when pollen and dust start wreaking their havoc, try blocking them with HistaBlock! Nature’s Sunshine’s unique herbal blend features stinging nettle, quercetin and bromelain to help you breathe easier. Each ingredient strengthens this blend. Nettle has a long history of supporting respiratory health. Bitter orange adds other nutrients for helpful support. Quercetin fights free radicals and supports respiratory health. And bromelain helps maintain clear nasal passages.


  • Supports the body in times of respiratory stress.
  • Supports the body's efforts to maintain a healthy mucous membrane.
  • Supports free breathing and may help reduce unpleasant symptoms associated with irritants.

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.


Nettle leaves, quercetin, Bitter orange fruit and bromelain.

Recommended Use:

Take 2 capsules with a meal twice daily.

Nearly 3,000 years ago, people living in the area of Denmark used cloth made from nettle to wrap their deceased relatives. Much more recently, nettle fiber was used in the making of uniforms for German soldiers during World War I. Today it grows all over the globe, even in remote places like Hawaii, Taiwan and the Canary Islands. Apparently, nettle fans brought their crop with them wherever they went. Interestingly, the medical term urticaria (commonly called hives) is a close derivative of the Latin name for nettle, Urtica dioica. Interestingly, the nettle plant can help alleviate the very skin reaction it causes. Making a tea of nettle root to wash irritated skin can offer immense relief to the affected area.

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