Allergic Rhinitis (Seasonal Allergies / Hay Fever) Protocol

Immune & InflammatoryStrong Evidence

supplements

Primary

Supporting

Grade A

Studies

Primary Stack

Core supplements with strongest evidence

ButterburA

75mg twice daily (PA-free extract)

Petasins inhibit leukotriene synthesis and block histamine receptors, reducing allergic inflammation

↓Allergy Symptoms

5 studies650 participants

Supporting Studies (2)

PMID: 11848315 - Butterbur vs cetirizine for allergic rhinitis (2002)PMID: 15602011 - Randomised controlled trial of butterbur for seasonal allergic rhinitis (2004)

QuercetinB

500mg twice daily

Stabilizes mast cells and inhibits histamine release while reducing inflammatory cytokine production

4 studies280 participants

Supporting Studies (2)

PMID: 26695627 - Therapeutic potential of quercetin in allergic diseases (2016)PMID: 23333628 - Quercetin attenuates allergic inflammation (2013)

Supporting Stack

Additional supplements for enhanced results

SpirulinaB

2g daily

Phycocyanin inhibits IgE-mediated histamine release and modulates Th1/Th2 immune balance

↓Allergy Symptoms↑Interferon Gamma↑Interleukin 4↑Nasal Congestion↑Interleukin 1-alpha

2 studies194 participants

Supporting Studies (1)

PMID: 18343939 - Spirulina for allergic rhinitis: a randomized trial (2008)

Stinging NettleC

300-600mg daily (freeze-dried)

Contains bioactive compounds that inhibit prostaglandin synthesis and reduce histamine-induced inflammation

↓Allergy Symptoms↑Nasal Congestion

2 studies98 participants

Supporting Studies (1)

PMID: 19140159 - Nettle extract in allergic rhinitis: a randomized trial (2009)

How This Protocol Works

Simple Explanation

Allergic rhinitis occurs when your immune system overreacts to harmless substances like pollen, dust, or pet dander. Upon exposure, mast cells release histamine and other inflammatory chemicals, causing sneezing, runny nose, nasal congestion, and itchy eyes.

•Butterbur is as effective as antihistamines like cetirizine in clinical trials but without causing drowsiness. It blocks both leukotriene and histamine pathways. Only use PA-free (pyrrolizidine alkaloid-free) extracts to ensure liver safety.

•Quercetin is a natural mast cell stabilizer—it prevents cells from releasing histamine in the first place. It works best when taken consistently before and during allergy season.

•Spirulina modulates the immune response that drives allergies. It reduces IgE antibodies (the antibodies that trigger allergic reactions) and shifts immune balance away from the allergy-promoting Th2 pathway.

•Stinging nettle has natural antihistamine properties. It works similarly to some over-the-counter allergy medications, reducing nasal swelling and mucus production.

Expected timeline: Butterbur provides relief within 1-2 weeks. Quercetin works best with 4+ weeks of consistent use before allergy season. Start supplementation 2-4 weeks before expected allergen exposure for preventive benefits.

Clinical Perspective

Allergic rhinitis pathophysiology involves IgE-mediated mast cell degranulation, eosinophil recruitment, and Th2-dominant immune polarization with elevated IL-4, IL-5, and IL-13 cytokines. This protocol targets multiple nodes of the allergic cascade.

•Butterbur (A-grade): Petasins inhibit 5-lipoxygenase (5-LOX) and cyclooxygenase-2 (COX-2), reducing leukotriene and prostaglandin synthesis. Also blocks H1 histamine receptors. 5 RCTs with 650 participants show efficacy comparable to cetirizine (PMID: 11848315). Must use PA-free extract.

•Quercetin (B-grade): Inhibits IgE-mediated histamine release from mast cells. Blocks NF-κB activation reducing inflammatory cytokine production. Inhibits IL-4 and IL-13 secretion from Th2 cells. 4 studies demonstrate reduced symptom scores (PMID: 26695627). Bioavailability enhanced with vitamin C.

•Spirulina (B-grade): Phycocyanin inhibits IgE-mediated histamine release. Suppresses CD4+ Th2 differentiation and IL-4 secretion. Enhances IFN-γ production, promoting Th1 balance. 2 studies with 194 participants show significant improvement in nasal symptoms (PMID: 18343939).

•Stinging Nettle (C-grade): Inhibits prostaglandin synthesis via COX-1 and COX-2 inhibition. Contains quercetin and other flavonoids with mast cell-stabilizing properties. Freeze-dried form most effective (PMID: 19140159).

Biomarker targets: Serum IgE, nasal eosinophil counts, TNSS (Total Nasal Symptom Score).

Protocol notes: Butterbur may cause GI upset—take with food. Quercetin enhances absorption with bromelain. Begin supplementation 2-4 weeks before allergen exposure for prophylactic benefit.

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