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evidence · mechanism · dose
Supplements/Herb

Butterbur Ze 339

PA-free butterbur for allergic rhinitis.

Immune Function

Overview

PA-free butterbur for allergic rhinitis.

Natural sources
    Common forms

      Mechanism of action

      Inhibits leukotrienes; histamine blocker.

      Pathways

        Effects on the body

        Organ system effects

        Evidence-based benefits

        Reduces hay fever

        Moderate evidence

        Potential side effects

        Common
        • · GI upset
        Rare
          Serious

            Drug interactions

            No notable interactions reported.

            Safety & non-supplemental interactions

            Educational summary — always confirm with your clinician or pharmacist before starting, stopping, or combining with prescription therapy.

            Avoid if you are
            • ·Pregnant or breastfeeding (insufficient safety data)
            • ·Children under 18 (unless directed by a clinician)
            Avoid with these conditions
            • ·Autoimmune disease (theoretical immune activation)
            Avoid / monitor with these medications
            • ·Immunosuppressants

            Supplement interactions

            Pairs well with

            None listed.

            Avoid combining with

            No specific avoidances listed.

            Dosing & bioavailability

            Typical dose
            8 mg TID

            Where to buy

            Affiliate-style search links to reputable retailers. We don't endorse specific brands — verify third-party testing (USP, NSF, Informed Sport) before purchase.

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            Thorne
            Practitioner-grade · NSF tested

            Scientific evidence (8)

            RCTBMJ · 2002

            Butterbur for hay fever

            Schapowal A

            125 patients

            Key findings

            Comparable to cetirizine.

            Open study
            Systematic reviewPubMed (NLM) · 1970

            PubMed: Butterbur Ze 339 — Reduces hay fever

            Live PubMed search

            Live results for "Butterbur Ze 339 Reduces hay fever" across the PubMed/MEDLINE peer-reviewed index.

            Key findings

            Opens current human and preclinical literature matching Butterbur Ze 339 and "Reduces hay fever". Filter by RCT, meta-analysis, or year on the results page.

            Open study
            Systematic reviewPubMed (NLM) · 1970

            PubMed: Butterbur Ze 339 — randomized controlled trial

            Live PubMed search

            Live results for "Butterbur Ze 339 randomized controlled trial" across the PubMed/MEDLINE peer-reviewed index.

            Key findings

            Opens current human and preclinical literature matching Butterbur Ze 339 and "randomized controlled trial". Filter by RCT, meta-analysis, or year on the results page.

            Open study
            Systematic reviewPubMed (NLM) · 1970

            PubMed: Butterbur Ze 339 — meta-analysis

            Live PubMed search

            Live results for "Butterbur Ze 339 meta-analysis" across the PubMed/MEDLINE peer-reviewed index.

            Key findings

            Opens current human and preclinical literature matching Butterbur Ze 339 and "meta-analysis". Filter by RCT, meta-analysis, or year on the results page.

            Open study
            Systematic reviewPubMed (NLM) · 1970

            PubMed: Butterbur Ze 339 — pharmacokinetics

            Live PubMed search

            Live results for "Butterbur Ze 339 pharmacokinetics" across the PubMed/MEDLINE peer-reviewed index.

            Key findings

            Opens current human and preclinical literature matching Butterbur Ze 339 and "pharmacokinetics". Filter by RCT, meta-analysis, or year on the results page.

            Open study
            Systematic reviewPubMed (NLM) · 1970

            PubMed: Butterbur Ze 339 — safety adverse events

            Live PubMed search

            Live results for "Butterbur Ze 339 safety adverse events" across the PubMed/MEDLINE peer-reviewed index.

            Key findings

            Opens current human and preclinical literature matching Butterbur Ze 339 and "safety adverse events". Filter by RCT, meta-analysis, or year on the results page.

            Open study
            Systematic reviewPubMed (NLM) · 1970

            PubMed: Butterbur Ze 339 — dose response

            Live PubMed search

            Live results for "Butterbur Ze 339 dose response" across the PubMed/MEDLINE peer-reviewed index.

            Key findings

            Opens current human and preclinical literature matching Butterbur Ze 339 and "dose response". Filter by RCT, meta-analysis, or year on the results page.

            Open study
            Systematic reviewGoogle Scholar · 1970

            Google Scholar: Butterbur Ze 339 — clinical evidence

            Live Scholar search

            Cross-database citation index for Butterbur Ze 339 as it relates to "clinical evidence".

            Key findings

            Includes preprints, theses, and journal articles. Useful for tracking citation counts and follow-on work.

            Open study
            Educational use only. This profile is not medical advice. Consult a qualified healthcare professional before starting any supplement, especially if you take prescription medication or have a chronic condition.