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  • HISTABLOCK® (90 Caps)
  • HISTABLOCK® (90 Caps)
  • HISTABLOCK® (90 Caps)
  • HISTABLOCK® (90 Caps)



  • 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.

Buy HistaBlock from MRVITAHERBS today to get support for your respiratory issues quickly and naturally at a low price. We are an independent distributor of Nature’s Sunshine products.

Recommended Usage:

Take two capsules twice per day, with or without food.


Supplement Facts:

  • Serving Size 2 Capsules
  • Servings per container: 45
  • Amount Per 2 Capsules
  • Proprietary blend 540 mg*
  • Bromelain (from pineapple fruit, Ananas comosus)
  • Nettle Leaves (Urtica dioica)
  • Fructus aurantia immaturi Fruit (Citrus aurantium)
  • Quercetin (from Sophora japonica fruit)
  • *Daily Value not established

Other Ingredients:

Cellulose (plant fiber), dicalcium phosphate, silicon dioxide (powdered silica), magnesium stearate (vegetable), water, and gelatin.

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2 Reviews

  • 5
    I have taken histablock for over a year and really like the results I achieve with this product

    Posted by Julia on Jul 24th 2018

    I would highly recommend this product to anyone suffering from daily allergies as I do.

  • 5
    Great Allergy Relief

    Posted by Kim on Dec 15th 2017

    I have been using this product for years to treat allergy symptoms. The great thing about it is, although it is not easily dissolved in liquid, it has no taste so it is very easy for those who can not swallow pills. This product works very quickly to relieve allergy symptoms such as itchy ears, eyes and mouth. Watery eyes, stuffy noise and sneezing.

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