Nature's Sunshine


90 Capsules
Stock #: 776
In Stock

No Sales Tax!

In stock

Nature's Sunshine HistaBlock

No Sales Tax!

Important information

  • No sales tax
  • No membership requirements
  • No automatic shipments
  • 90 day FREE returns

Expiration Date: 09/2023

Shipping (1 unit): $2.99.

FREE shipping on all orders over $75!

Product Information


  • Battles pollutants, allergens, and toxins
  • Contains antioxidant properties
  • Assists in reducing swelling of mucous membranes

How it Works

Nature’s Sunshine HistaBlockĀ® nourishes the respiratory system and fights off irritants and pollutants to maintain respiratory health. The formula blends stinging nettle, quercetin, bromelain, and immature orange peel (which contains synephrine). HistaBlock also has antioxidant properties, assists in reducing mucous membrane swelling, and opens respiratory airways for easier breathing.



Nettle leaves, quercetin, bitter orange fruit, bromelain

Recommended Use

Take 2 capsules twice daily.

Product Label

Easy Returns

The Caring Sunshine return policy is both easy and generous. We accept returns for any reason for 90 days from the order date and we cover the shipping costs both ways. Read our full policy here.

New label and other changes

In the fall of 2020, Nature's Sunshine switched to a new label and changed the names of a few products. However, no formulas have been changed. To learn more about the changes, click here.

Customer Reviews

Based on 15 reviews
Brittney Daniel

Love these products and fast shipping

Chris Albright
Hista block

I was skeptical many years ago when trying it, I can't say enough about how much I love this product. No drowsiness no bad side effects just easy breathing all year round.

Pam Brunner

Like that I only have to spend $75 to get free shipping.


Best little secret out there. Love this product

Kathy Coughlin
Works great

I love Histablock! I have been using it for a number of years. I use it to help with seasonal allergies and year-round sinus problems that can occur due to weather and changes in air pressure. It is particularly helpful when I mow the lawn and work in the yard. It helps minimize sneezing, sniffling and runny nose. Other times of the year I can get bad sinus pressure and swollen eyes and it helps with that too. My area is known for causing sinus problems. Actually, I take one or more Histablock capsules most days, depending on how I feel and what I'm doing in the yard. I sometimes combine it with Sinus Support, which is also good but seems to focus more on the lungs (it has hot pepper in it which you can feel in the lungs). I like both. Histablock does not have a dramatic effect like an OTC antihistimine, rather it has a subtle effect. I feel much better than I used to years ago when I used to have frequent severe and debilitating sinus headaches. A number of changes might have affected my sinus headaches such as changing to a plant-based diet, omitting coffee and getting older and having my hormones change, but Histablock definitely helps my sinus issues. I wouldn't want to be without it!