Allergic Rhinitis (Hay Fever)
Allergic rhinitis, commonly known as hay fever, is a condition involving symptoms in and around the nose and eyes. A person may notice nasal congestion, sneezing, itching, watery eyes, or a general feeling of malaise.
Learn more about Allergic Rhinitis (Hay Fever), commonly known as hay fever, in the context of immune health.
This list shows research findings, not treatments. Nothing here replaces medical care. If you have this condition, talk to a doctor.
What may help
What studies found for each option, best evidence first.
5 options:2 some evidence3 not enough evidence
Nasal Irrigation (Neti Pot)practiceSome evidence it helpsSize of effect: Not known
Some human studies found a benefit. More research could change this.
All 15 studies with a clear result found a benefit.
A meta-analysis of 14 randomized trials found saline irrigation beneficial as an add-on for allergic rhinitis. Pooled randomized trials of 3% hypertonic saline irrigation found symptom and antihistamine-use benefits versus control, but no antihistamine-use difference versus isotonic saline.
Open the Nasal Irrigation (Neti Pot) pageRed Light Therapy (Photobiomodulation)practiceSome evidence it helpsSize of effect: Not known
Some human studies found a benefit. More research could change this.
All 2 studies with a clear result found a benefit.
A meta-analysis of 16 studies reported reduced nasal symptoms and RQLQ scores after low-level laser therapy, but the comparison with placebo was not significant. A separate RCT in 62 patients reported improvement in nasal parameters compared with a sham device.
Open the Red Light Therapy (Photobiomodulation) pageAcupuncturepracticeNot enough evidence
Too few or too small studies to know if it works.
The one study found a benefit.
The trials specifically enrolled people clinically diagnosed with allergic rhinitis and evaluated acupuncture-related therapies for this condition.
Open the Acupuncture pageCardiopracticeNot enough evidence
Too few or too small studies to know if it works.
The one study found a benefit.
An 8-week RCT involving 18 people with allergic rhinitis reported improvements in RSS, PNIF, FeNO, FVC, and cardiorespiratory outcomes, with no adverse events reported.
Open the Cardio pageFinnish SaunapracticeNot enough evidence
Too few or too small studies to know if it works.
The one study found a benefit.
A pooled review reported improved peak nasal inspiratory flow and FEV1 in a trial involving people with allergic rhinitis.
Open the Finnish Sauna page
The expert view shows every study, dose protocol and source.
What may help
Interventions recorded as helping with this condition5 listedMost likely to help, from the evidence we have
- →PracticesNasal Irrigation (Neti Pot)CertaintyMediumSourceRCT
A meta-analysis of 14 randomized trials found saline irrigation beneficial as an add-on for allergic rhinitis. Pooled randomized trials of 3% hypertonic saline irrigation found symptom and antihistamine-use benefits versus control, but no antihistamine-use difference versus isotonic saline.
Who was studied
- People with a condition
- Allergic Rhinitis
- Allergies
- Common Cold
- Respiratory Infection
Open Nasal Irrigation (Neti Pot)Study result
Meta-analysis of 14 RCTs in allergic rhinitis patients showing benefit of saline irrigation as adjunct therapy
- →PracticesRed Light Therapy (Photobiomodulation)CertaintyMediumSourceRCT
A meta-analysis of 16 studies reported reduced nasal symptoms and RQLQ scores after low-level laser therapy, but the comparison with placebo was not significant. A separate RCT in 62 patients reported improvement in nasal parameters compared with a sham device.
Who was studied
- People with a condition
- Allergic Rhinitis
Open Red Light Therapy (Photobiomodulation)Study result
Meta-analysis of 16 studies showing significant reduction in nasal symptoms and RQLQ scores after LLLT, though placebo comparison not significant.
Low probability(3)
- →PracticesAcupunctureCertaintyLowSourceRCT
The trials specifically enrolled people clinically diagnosed with allergic rhinitis and evaluated acupuncture-related therapies for this condition.
Who was studied
- People with a condition
- Allergies
Open AcupunctureStudy result
All 38 included RCTs enrolled patients clinically diagnosed with allergic rhinitis; acupuncture-related therapies were evaluated for this indication.
- →PracticesCardioCertaintyLowSourceClinical
An 8-week RCT involving 18 people with allergic rhinitis reported improvements in RSS, PNIF, FeNO, FVC, and cardiorespiratory outcomes, with no adverse events reported.
Who was studied
- People with a condition
Open CardioStudy result
8-week RCT (n=18) showing significant improvements in RSS, PNIF, FeNO, FVC, and cardiorespiratory outcomes; no adverse events.
- →PracticesFinnish SaunaCertaintyLowSourceClinical
A pooled review reported improved peak nasal inspiratory flow and FEV1 in a trial involving people with allergic rhinitis.
Who was studied
- Healthy people and patients
- Allergic Rhinitis
- Ankylosing Spondylitis
- Chronic Fatigue Syndrome
- Common Cold
- Copd
- Depression
- +4 more
Open Finnish SaunaStudy result
Kunbootsri 2013 RCT: improved peak nasal inspiratory flow and FEV1.
What to avoid
Interventions recorded as making it worseNothing in this library is currently recorded as making Allergic Rhinitis (Hay Fever) worse. Coverage is partial, and absence here is not evidence of safety.
How to read the evidence
Evidence tier — overall strength of the evidence for the whole compound
- StrongWell established — backed by strong, consistent human research.
- ModerateSome genuine support, but mostly from small or lower-quality studies. Promising, not proven.
- PreliminaryEarly-stage evidence — a promising hypothesis, not an established effect yet.
- LimitedVery limited evidence — treat this as a hypothesis, not proof.
- InsufficientNot enough good evidence to draw conclusions yet.
Certainty — how sure we can be that the effect is real
- Very highVery sure — strong, consistent evidence
- HighFairly sure — consistent evidence from good studies
- MediumModerately sure — new studies could change this
- LowNot sure — little or mixed evidence
- Very lowVery unsure — almost no usable evidence
Source — where the data comes from
- Meta-analysisPooled analysis of many trials — the strongest evidence
- RCTRandomized controlled trial — a strong human study design
- ClinicalA human clinical study
- Reference knowledgeFrom general health-science or pharmacology references, not a study of this exact claim
- Animal researchStudied in animals, not humans
- Community reportsAggregated user reports — anecdotal signal, not evidence
- TheoreticalMechanism-based reasoning, not yet tested
Study grade — quality of each underlying study (A best, D weakest)
- AHigh-quality — strong, consistent human trials
- BGood — solid evidence with some limitations
- CModerate — limited, small, or mixed-quality studies
- DWeak — preliminary, indirect, or animal-only
Confidence — how strongly the sources back a finding
A 0–100 score from study quality and agreement
Most supplement evidence is graded C–D. Read it as preliminary signal, not proof.
Full write-up
What is it
Allergic rhinitis, commonly known as hay fever, is a condition involving symptoms in and around the nose and eyes. A person may notice nasal congestion, sneezing, itching, watery eyes, or a general feeling of malaise. These symptoms can occur together, so hay fever is not defined by sneezing alone. It is discussed here in the context of immune health.
Evidence-backed options
The evidence for options associated with Allergic Rhinitis (Hay Fever) is uneven in both strength and applicability. One option has direct clinical-condition evidence, while another is supported by a review involving an unspecified population. The remaining options are described in pharmacology references, so their relevance to people with a confirmed clinical diagnosis is less clearly established.
Across the options, the findings relate mainly to nasal and eye symptoms, including congestion, sneezing, itching, lacrimation and general malaise. Some proposed explanations involve effects on inflammation, antihistamine activity or mast cell stabilization, but these mechanisms do not establish that an option will work for every person or clarify how it compares with standard care.
The available summaries do not provide comparable doses, treatment durations or time to onset. As a result, they cannot show what was taken, for how long, or how quickly changes appeared. The evidence also does not establish whether these options apply equally to seasonal and perennial symptoms, or to people with different underlying causes of rhinitis. A clinician can help interpret these options in the context of an individual’s symptoms, allergies and other treatments.