HistaBlock
What's inside
Supplement Facts
| Ingredients | Amount |
|---|---|
| Proprietary Blend | 540 mg |
| nettle leaves | †|
| quercetin | †|
| bitter orange fruit | †|
| bromelain | †|
| Other ingredients: capsule (gelatin, water), cellulose, di-calcium phosphate, magnesium stearate, silicon dioxide |
Recommended use
Take 2 capsules twice daily.
Days supply
22 days
UPC
099904007765
Product categories
Health conditions
Body systems
Expiration date
11/2026
How it works
Nature's Sunshine HistaBlock® 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.
STOCK NUMBER: 776-1
Why take this product?
- ✓Battles pollutants, allergens, and toxins
- ✓Contains antioxidant properties
- ✓Assists in reducing swelling of mucous membranes
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Book a free consultationFrequently Asked Questions
Everything you need to know about this product.
What is HistaBlock?
HistaBlock is a Nature's Sunshine formula designed to nourish and support the respiratory system. It helps the body fight off irritants and pollutants while also providing antioxidant properties and assisting in reducing mucous membrane swelling for easier breathing.
What are the key ingredients in HistaBlock?
Each serving contains 540 mg each of nettle leaves, quercetin, bitter orange fruit, and bromelain. Nettle leaves and quercetin are well-regarded for supporting a healthy respiratory response, bromelain may help promote comfortable breathing, and bitter orange fruit (which contains synephrine) supports open respiratory airways.
How do I take HistaBlock?
Take 2 capsules twice daily. Each bottle contains 90 capsules, which provides approximately a 22-day supply at the recommended serving.
Who is HistaBlock best suited for?
HistaBlock is a great fit for adults looking for respiratory support, especially those dealing with seasonal allergies, sinus and nasal congestion, or excess mucus and phlegm. As always, anyone who is pregnant, nursing, or taking medication should consult their healthcare provider before use.
How does HistaBlock compare to other respiratory support products?
HistaBlock focuses specifically on battling pollutants and allergens with its blend of nettle, quercetin, bromelain, and bitter orange. If you're exploring other options, Seasonal Allergy (Formerly ALJ) and Seasonal Defense also support seasonal comfort, Sinus Support EF targets sinus health, SnorEase is formulated for breathing ease during sleep, and ALJ liquid offers a convenient liquid form. HistaBlock stands out for its antioxidant properties and its focus on reducing mucous membrane swelling.
What people are saying
- Patricia Case10/30/2025Heavy metal detox
I love the product Heavy metal detox. I got a blood test and it showed I had a lot of heavy metals in my blood. So I have been using it every day. And the last blood test showed a marked improvement. I will continue to use it. It really works!
- sue spitler9/15/2025sneeze
I've found HistaBlock helpful in controlling spring allergies. i prefer taking natural herbal products to over-the-counter products at the drug store.
- Susan Wilson9/15/2025
Luv this product ! Was forced to go off years of Sudafed use ... this has saved me !
- Stacy Beavers9/15/2025
HistaBlock
- Fred King9/15/2025Histablock
Helps me so much with my allergies better than over the counter medicine
- Mary Kennedy9/15/2025Hostablock
Works great for my histamine intolerance.
- Danette Walter9/15/2025
HistaBlock
- Maria9/15/2025Histablock
The over the counter allergy medicine would make me feel tired and sleepy. I’m so glad I found this alternative. It works with in the hour for me and doesn’t make me drowsy. Great product!
- Jered Dederer9/15/2025This Stuff Works!
I was recommended a sister product to the Histablock over 10 years ago. When I went to reorder for this year, I saw a product called Histablock and decided to add it to my order to see if it worked. The short answer is YES! It works! The longer answer is that the Seasomal Allergy supplement (Formerly ALJ) worked well on its own, but never really broke up thr nasal congestion, in my opinion. The Histablock does break up the congestion. Since taking the Histablock my sinuses are much clearer and I am not nearly as congested as before. I feel it has improved my ability to breath through my nose and kept my airways clear. Would I recommend this product? Yes. Without hesitation. It works.
- Dawn Heflin9/15/2025Allergy relief
I love that I don’t have to take Claritin anymore because of this
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