Isn't this worthless without DAO in it?

As per our manufacturer, Nature's Sunshine says, "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." In addition Nature's Sunshine says, "As for if it works best with Diamine Oxidase you should ask an herbalist."

Which are the ingredients?

The nettle leaf takes away the toxins and the brimelsin is an enzyme that helps inflammation.

Is this the same as D-Hist?

It is not the same as D-Hist but contains similar ingredients.

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Nature's Sunshine Histablock 90 Capsules

Nature's Sunshine Histablock 90 Capsules

Product ID: 686657154

Details

Brand
Nature's
Flavour
Orange
Item dimensions L x W x H
9.4 x 5.1 x
Item form
Capsule
Item weight
0.15 Pounds
Manufacturer
Nature's

🌿Nettle-powered seasonal defense

🍊Bitter orange keeps airways open

🧬Bromelain enzyme reduces mucous swelling

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VT17491

Duties & taxes included

In stock

Sold byAmazon VanuatuDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🌬️ Breathe freely, live fully — your natural edge against seasonal stress!

AIRWAY OPENER BOOST - Synephrine from bitter orange supports clear, open airways when you need it most.
ENZYME DRIVEN RELIEF - Bromelain targets mucous membrane swelling for smoother breathing during respiratory stress.
SEASONAL ALLERGY SHIELD - Harnesses nettle’s natural power to combat airborne irritants and keep you active all year round.
ANTIOXIDANT CELL STABILIZER - Quercetin helps stabilize mast cells, reducing overreactions to allergens and pollutants.
TRUSTED QUALITY TRANSPARENCY - Nature’s Sunshine ensures rigorous ingredient sourcing and batch consistency for your peace of mind.

Nature's Sunshine Histablock is a scientifically crafted supplement combining bromelain, nettle, bitter orange, and quercetin to support healthy respiratory function and reduce allergy-related inflammation. Designed for professionals seeking natural, effective relief from seasonal airborne irritants, it stabilizes mast cells and promotes open airways without the drying effects of traditional antihistamines. Backed by decades of research and trusted quality control, Histablock empowers you to stay active and comfortable year-round.

Specifications

ASIN	B000PJFTL6
Best Sellers Rank	#170,290 in Health ( See Top 100 in Health ) #4,826 in Multiple Vitamin-Mineral Combination Supplements
Brand	Nature's Sunshine
Brand Name	Nature's Sunshine
Customer Reviews	4.6 out of 5 stars 1,601 Reviews
Flavor	Orange
Flavour	Orange
Item Dimensions	9.4 x 5.1 x 4.3 centimeters
Item Form	Capsule
Item Weight	68 g
Item dimensions L x W x H	9.4 x 5.1 x 4.3 centimeters
Item form	Capsule
Item weight	68 g
Manufacturer	Nature's Sunshine
Manufacturer Part Number	B000PJFTL6
Product Benefits	Antioxidant
Special Ingredients	Bromelain
Special ingredients	Bromelain
UPC	099904007765

Reviews

W**B

Outstanding Ingredients and Quality Control 💚

21.11.2024

J**E

Works great

17.04.2026

S**N

It works wonders

28.03.2026

P**R

It works

20.03.2026

M**L

Nature 's Sunshine HisaBlock/Respiratory System

24.04.2026

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