HRH1 verstärkte auch synergistisch den hACE2-abhängigen Viruseintritt durch Wechselwirkung mit hACE2. Antihistaminika verhindern wirksam die Virusinfektion, indem sie konkurrierend an HRH1 binden und so die Interaktion zwischen dem Spike-Protein und seinem Rezeptor unterbrechen.
July 6, 2024 at 1:11 PM
HRH1 verstärkte auch synergistisch den hACE2-abhängigen Viruseintritt durch Wechselwirkung mit hACE2. Antihistaminika verhindern wirksam die Virusinfektion, indem sie konkurrierend an HRH1 binden und so die Interaktion zwischen dem Spike-Protein und seinem Rezeptor unterbrechen.
the mechanism from the paper is basically that COVID will bind to ACE2 and HRH1, using HRH1 to better bind to ACE2. antihistamines saturate HRH1 so that COVID can’t bind to it as easily, making infection and replication more difficult.
July 7, 2024 at 9:55 AM
the mechanism from the paper is basically that COVID will bind to ACE2 and HRH1, using HRH1 to better bind to ACE2. antihistamines saturate HRH1 so that COVID can’t bind to it as easily, making infection and replication more difficult.
Langzeitbehandlung von COVID-19 unterstreicht. Bemerkenswerterweise zeigten unsere Studien, dass HRH1 als alternativer Rezeptor für SARS-CoV-2 fungiert, indem es direkt an das virale Spike-Protein bindet, während Antihistaminika in der Lage sind, kompetitiv an HRH1 zu binden, was
July 6, 2024 at 1:15 PM
Langzeitbehandlung von COVID-19 unterstreicht. Bemerkenswerterweise zeigten unsere Studien, dass HRH1 als alternativer Rezeptor für SARS-CoV-2 fungiert, indem es direkt an das virale Spike-Protein bindet, während Antihistaminika in der Lage sind, kompetitiv an HRH1 zu binden, was
Antihistaminika, insbesondere Histaminrezeptor-H1 (HRH1)-Antagonisten, hemmen wirksam die #SARSCoV2-Infektion
In dieser Studie wurde „nachgewiesen, dass HRH1 als alternativer Rezeptor für #SARSCoV2 fungiert, indem er direkt an das virale Spike-Protein bindet.🧵
#COVID19 #Corona
In dieser Studie wurde „nachgewiesen, dass HRH1 als alternativer Rezeptor für #SARSCoV2 fungiert, indem er direkt an das virale Spike-Protein bindet.🧵
#COVID19 #Corona
July 6, 2024 at 1:11 PM
Antihistaminika, insbesondere Histaminrezeptor-H1 (HRH1)-Antagonisten, hemmen wirksam die #SARSCoV2-Infektion
In dieser Studie wurde „nachgewiesen, dass HRH1 als alternativer Rezeptor für #SARSCoV2 fungiert, indem er direkt an das virale Spike-Protein bindet.🧵
#COVID19 #Corona
In dieser Studie wurde „nachgewiesen, dass HRH1 als alternativer Rezeptor für #SARSCoV2 fungiert, indem er direkt an das virale Spike-Protein bindet.🧵
#COVID19 #Corona
ACE2 and HRH1 (histamine 1 receptor) actually bind to each other, which can help COVID enter cells. So there's sort of 2 paths to entry, either through ACE2, or if there's not a lot of ACE2 receptors, through HRH1.
Antihistamines that block H1 could prevent COVID from entering cells!!
7/9
Antihistamines that block H1 could prevent COVID from entering cells!!
7/9
September 7, 2025 at 9:12 PM
ACE2 and HRH1 (histamine 1 receptor) actually bind to each other, which can help COVID enter cells. So there's sort of 2 paths to entry, either through ACE2, or if there's not a lot of ACE2 receptors, through HRH1.
Antihistamines that block H1 could prevent COVID from entering cells!!
7/9
Antihistamines that block H1 could prevent COVID from entering cells!!
7/9
Antihistamines should be part of a defense in depth strategy and not your only precaution. Did I mention you should be masking? Because you should be masking! That having been said: Because the virus uses the HRH1 receptors to enter cells, keeping those receptors busy reduces the attack vector.
September 21, 2025 at 9:10 PM
Antihistamines should be part of a defense in depth strategy and not your only precaution. Did I mention you should be masking? Because you should be masking! That having been said: Because the virus uses the HRH1 receptors to enter cells, keeping those receptors busy reduces the attack vector.
Research summary thread!!
A COVID research paper found that the histamine 1 receptor (HRH1) is highly involved in enhancing COVID infection.
They also found that most H1 blockers (antihistamines, like Claritin) reduced COVID after exposure!
1/8
pmc.ncbi.nlm.nih.gov/articles/PMC...
A COVID research paper found that the histamine 1 receptor (HRH1) is highly involved in enhancing COVID infection.
They also found that most H1 blockers (antihistamines, like Claritin) reduced COVID after exposure!
1/8
pmc.ncbi.nlm.nih.gov/articles/PMC...
The histamine receptor H1 acts as an alternative receptor for SARS-CoV-2
Numerous host factors, in addition to human angiotensin-converting enzyme 2 (hACE2), have been identified as coreceptors of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), demonstrating ...
pmc.ncbi.nlm.nih.gov
September 7, 2025 at 9:12 PM
Research summary thread!!
A COVID research paper found that the histamine 1 receptor (HRH1) is highly involved in enhancing COVID infection.
They also found that most H1 blockers (antihistamines, like Claritin) reduced COVID after exposure!
1/8
pmc.ncbi.nlm.nih.gov/articles/PMC...
A COVID research paper found that the histamine 1 receptor (HRH1) is highly involved in enhancing COVID infection.
They also found that most H1 blockers (antihistamines, like Claritin) reduced COVID after exposure!
1/8
pmc.ncbi.nlm.nih.gov/articles/PMC...
It doesn't just use ACE2! It also uses HRH1: journals.asm.org/doi/10.1128/...
The histamine receptor H1 acts as an alternative receptor for
SARS-CoV-2 | mBio
In addition to human angiotensin-converting enzyme 2, severe acute respiratory syndrome
coronavirus 2 (SARS-CoV-2) can utilize alternative cofactors to facilitate viral entry.
In this study, we discov...
journals.asm.org
May 3, 2025 at 5:19 AM
It doesn't just use ACE2! It also uses HRH1: journals.asm.org/doi/10.1128/...
zur Abschwächung der langfristigen COVID-19-Symptome eingesetzt werden.“
journals.asm.org/doi/10.1128/...
#COVID19 #HRH1 #Antihistaminika #Corona #SARSCoV2 #LongCovid
journals.asm.org/doi/10.1128/...
#COVID19 #HRH1 #Antihistaminika #Corona #SARSCoV2 #LongCovid
The histamine receptor H1 acts as an alternative receptor for SARS-CoV-2 | mBio
In addition to human angiotensin-converting enzyme 2, severe acute respiratory syndrome
coronavirus 2 (SARS-CoV-2) can utilize alternative cofactors to facilitate viral entry.
In this study, we discov...
journals.asm.org
July 6, 2024 at 1:16 PM
zur Abschwächung der langfristigen COVID-19-Symptome eingesetzt werden.“
journals.asm.org/doi/10.1128/...
#COVID19 #HRH1 #Antihistaminika #Corona #SARSCoV2 #LongCovid
journals.asm.org/doi/10.1128/...
#COVID19 #HRH1 #Antihistaminika #Corona #SARSCoV2 #LongCovid
One of the papers I need to add to the entry is journals.asm.org/doi/10.1128/... -- it needs an "in mice" caveat, but researchers have shown that SARS-CoV-2 actually does use the HRH1 pathway for infection in addition to hACE-2, and antihistamines keep HRH1 too busy for the virus to take hold.
The histamine receptor H1 acts as an alternative receptor for
SARS-CoV-2 | mBio
In addition to human angiotensin-converting enzyme 2, severe acute respiratory syndrome
coronavirus 2 (SARS-CoV-2) can utilize alternative cofactors to facilitate viral entry.
In this study, we discov...
journals.asm.org
November 14, 2024 at 7:24 PM
One of the papers I need to add to the entry is journals.asm.org/doi/10.1128/... -- it needs an "in mice" caveat, but researchers have shown that SARS-CoV-2 actually does use the HRH1 pathway for infection in addition to hACE-2, and antihistamines keep HRH1 too busy for the virus to take hold.
Seems this is relevant still today. Based on a true story
youtu.be/hRh1-cyWfGQ?...
youtu.be/hRh1-cyWfGQ?...
Pirate Radio - Official Trailer
YouTube video by Focus Features
youtu.be
December 17, 2024 at 2:54 AM
Seems this is relevant still today. Based on a true story
youtu.be/hRh1-cyWfGQ?...
youtu.be/hRh1-cyWfGQ?...
This is a really big deal for a few reasons:
Initially, it was thought that the HRH1 (histamine 1 receptor) only enhanced the virus through working with the ACE2 receptor.
While it *can* do that, it can also enhance COVID without the ACE2 receptor at all!
2/9
Initially, it was thought that the HRH1 (histamine 1 receptor) only enhanced the virus through working with the ACE2 receptor.
While it *can* do that, it can also enhance COVID without the ACE2 receptor at all!
2/9
September 7, 2025 at 9:12 PM
This is a really big deal for a few reasons:
Initially, it was thought that the HRH1 (histamine 1 receptor) only enhanced the virus through working with the ACE2 receptor.
While it *can* do that, it can also enhance COVID without the ACE2 receptor at all!
2/9
Initially, it was thought that the HRH1 (histamine 1 receptor) only enhanced the virus through working with the ACE2 receptor.
While it *can* do that, it can also enhance COVID without the ACE2 receptor at all!
2/9
"our results confirmed that HRH1 is directly bound to SARS-CoV-2 S and hACE2." They also tested various strains of COVID (including delta and BA variants) and found that all of them were affected by antihistamines that blocked the H1 receptor!
They focused on 5 antihistamines.
5/9
They focused on 5 antihistamines.
5/9
September 7, 2025 at 9:12 PM
"our results confirmed that HRH1 is directly bound to SARS-CoV-2 S and hACE2." They also tested various strains of COVID (including delta and BA variants) and found that all of them were affected by antihistamines that blocked the H1 receptor!
They focused on 5 antihistamines.
5/9
They focused on 5 antihistamines.
5/9
I want this so much. I've been waiting for next gen COVID vaccines for years, and I'm really hoping that this works better than the current ones, at least in terms of transmission and waning immunity over time. I'm also awaiting more research on the HRH1 route beyond that one paper from last year.
February 11, 2025 at 11:07 PM
I want this so much. I've been waiting for next gen COVID vaccines for years, and I'm really hoping that this works better than the current ones, at least in terms of transmission and waning immunity over time. I'm also awaiting more research on the HRH1 route beyond that one paper from last year.
More evidence that HRH1 antagonist antihistamines can help prevent COVID.
The histamine receptor H1 acts as an alternative receptor for SARS-CoV-2
journals.asm.org/doi/10.1128/...
journals.asm.org/doi/10.1128/...
The histamine receptor H1 acts as an alternative receptor for SARS-CoV-2 | mBio
In addition to human angiotensin-converting enzyme 2, severe acute respiratory syndrome
coronavirus 2 (SARS-CoV-2) can utilize alternative cofactors to facilitate viral entry.
In this study, we discov...
journals.asm.org
July 6, 2024 at 8:02 PM
More evidence that HRH1 antagonist antihistamines can help prevent COVID.
There is an ever-increasing body of scientific evidence that the virus uses cells' histamine receptors for infection and that's part of why it's so virulent: journals.asm.org/doi/10.1128/... Large enough quantities of antihistamines serve as preferential binders and reduce capacity for viral entry.
The histamine receptor H1 acts as an alternative receptor for SARS-CoV-2 | mBio
In addition to human angiotensin-converting enzyme 2, severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) can utilize alternative cofactors to facilitate viral entry. In this study, we discovered that histamine receptor H1 (HRH1) not only ...
journals.asm.org
September 4, 2025 at 10:14 AM
There is an ever-increasing body of scientific evidence that the virus uses cells' histamine receptors for infection and that's part of why it's so virulent: journals.asm.org/doi/10.1128/... Large enough quantities of antihistamines serve as preferential binders and reduce capacity for viral entry.
It's looking like a combo of mast cell involvement and SARS-CoV-2 using the HRH1 receptors as alternate viral entry! I started telling even my non-MCAS friends who have terrible vaccine reactions to try the MCAS protocol of 50mg diphenhydramine 15m pre-vaccine --
April 30, 2025 at 8:00 PM
It's looking like a combo of mast cell involvement and SARS-CoV-2 using the HRH1 receptors as alternate viral entry! I started telling even my non-MCAS friends who have terrible vaccine reactions to try the MCAS protocol of 50mg diphenhydramine 15m pre-vaccine --
Yup, the spike protein is an extra potent mast cell destabilizer to the point it can cause MCAS reactions in people without MCAS! About 60% of long COVID cases improve significantly if you treat them like MCAS, and the virus uses the HRH1 receptor to enter cells and reproduce--
September 19, 2025 at 3:45 AM
Yup, the spike protein is an extra potent mast cell destabilizer to the point it can cause MCAS reactions in people without MCAS! About 60% of long COVID cases improve significantly if you treat them like MCAS, and the virus uses the HRH1 receptor to enter cells and reproduce--
Add that paper about HRH1 as a potential secondary mechanism for infection to the implication that a lot of COVID-related symptoms are mast cell related and I am strongly on team "antihistamines are a useful COVID prevention measure" forevermore.
April 30, 2025 at 6:45 PM
Add that paper about HRH1 as a potential secondary mechanism for infection to the implication that a lot of COVID-related symptoms are mast cell related and I am strongly on team "antihistamines are a useful COVID prevention measure" forevermore.
Antihistaminika, insbesondere Histaminrezeptor-H1 (HRH1)-Antagonisten, hemmen wirksam die #SARSCoV2-Infektion
Mehr dazu in meinem Account, Post von Ralf Wittenbring
Mehr dazu in meinem Account, Post von Ralf Wittenbring
September 3, 2024 at 5:27 AM
Antihistaminika, insbesondere Histaminrezeptor-H1 (HRH1)-Antagonisten, hemmen wirksam die #SARSCoV2-Infektion
Mehr dazu in meinem Account, Post von Ralf Wittenbring
Mehr dazu in meinem Account, Post von Ralf Wittenbring
There's a reason I include the scientific evidence behind the COVID-antihistamine-mast cell link when I talk about it! It's not a fringe theory. journals.asm.org/doi/10.1128/...
The histamine receptor H1 acts as an alternative receptor for SARS-CoV-2 | mBio
In addition to human angiotensin-converting enzyme 2, severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) can utilize alternative cofactors to facilitate viral entry. In this study, we discovered that histamine receptor H1 (HRH1) not only ...
journals.asm.org
June 19, 2025 at 6:27 PM
There's a reason I include the scientific evidence behind the COVID-antihistamine-mast cell link when I talk about it! It's not a fringe theory. journals.asm.org/doi/10.1128/...
Whoa. HRH1 antagonist antihistamines (including Zyrtec, Claritin, Allegra, Benadryl, etc.) can reduce the ability of the COVID virus to enter cells. https://journals.asm.org/doi/epub/10.1128/mbio.01088-24 https://journals.asm.org/doi/epub/10.1128/mbio.01088-24
July 8, 2024 at 7:34 PM
Whoa. HRH1 antagonist antihistamines (including Zyrtec, Claritin, Allegra, Benadryl, etc.) can reduce the ability of the COVID virus to enter cells. https://journals.asm.org/doi/epub/10.1128/mbio.01088-24 https://journals.asm.org/doi/epub/10.1128/mbio.01088-24
Science seems to say that covid binds like a histamine reactine therefore antihistamine are possibly preventing infections journals.asm.org/doi/10.1128/...
The histamine receptor H1 acts as an alternative receptor for SARS-CoV-2 | mBio
In addition to human angiotensin-converting enzyme 2, severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) can utilize alternative cofactors to facilitate viral entry. In this study, we discovered that histamine receptor H1 (HRH1) not only ...
journals.asm.org
July 6, 2024 at 3:16 PM
Science seems to say that covid binds like a histamine reactine therefore antihistamine are possibly preventing infections journals.asm.org/doi/10.1128/...
journals.asm.org/doi/10.1128/... was the paper that really cemented what I was already pretty sure on, even though it needs an "...in mice" in the title.
The histamine receptor H1 acts as an alternative receptor for SARS-CoV-2 | mBio
In addition to human angiotensin-converting enzyme 2, severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) can utilize alternative cofactors to facilitate viral entry. In this study, we discovered that histamine receptor H1 (HRH1) not only ...
journals.asm.org
April 30, 2025 at 6:38 PM
journals.asm.org/doi/10.1128/... was the paper that really cemented what I was already pretty sure on, even though it needs an "...in mice" in the title.