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evidence · mechanism · dose
Supplements/Herb

Pelargonium Sidoides

South African geranium for bronchitis.

Immune Function

Overview

South African geranium for bronchitis.

Natural sources
    Common forms

      Mechanism of action

      Antiviral and immunomodulatory.

      Pathways

        Effects on the body

        Organ system effects

        Evidence-based benefits

        Reduces acute bronchitis duration

        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
            30 drops 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.

            Herb
            Pelargonium …
            Amazon
            Wide selection · fast shipping
            Herb
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            iHerb
            Global delivery · curated brands
            Herb
            Pelargonium …
            Thorne
            Practitioner-grade · NSF tested

            Scientific evidence (8)

            RCTPhytomedicine · 2003

            Pelargonium in bronchitis

            Matthys H, et al.

            468 adults

            Key findings

            Reduced bronchitis symptoms.

            Open study
            Systematic reviewPubMed (NLM) · 1970

            PubMed: Pelargonium Sidoides — Reduces acute bronchitis duration

            Live PubMed search

            Live results for "Pelargonium Sidoides Reduces acute bronchitis duration" across the PubMed/MEDLINE peer-reviewed index.

            Key findings

            Opens current human and preclinical literature matching Pelargonium Sidoides and "Reduces acute bronchitis duration". Filter by RCT, meta-analysis, or year on the results page.

            Open study
            Systematic reviewPubMed (NLM) · 1970

            PubMed: Pelargonium Sidoides — randomized controlled trial

            Live PubMed search

            Live results for "Pelargonium Sidoides randomized controlled trial" across the PubMed/MEDLINE peer-reviewed index.

            Key findings

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

            Open study
            Systematic reviewPubMed (NLM) · 1970

            PubMed: Pelargonium Sidoides — meta-analysis

            Live PubMed search

            Live results for "Pelargonium Sidoides meta-analysis" across the PubMed/MEDLINE peer-reviewed index.

            Key findings

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

            Open study
            Systematic reviewPubMed (NLM) · 1970

            PubMed: Pelargonium Sidoides — pharmacokinetics

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            Live results for "Pelargonium Sidoides pharmacokinetics" across the PubMed/MEDLINE peer-reviewed index.

            Key findings

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

            Open study
            Systematic reviewPubMed (NLM) · 1970

            PubMed: Pelargonium Sidoides — safety adverse events

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            Live results for "Pelargonium Sidoides safety adverse events" across the PubMed/MEDLINE peer-reviewed index.

            Key findings

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            Open study
            Systematic reviewPubMed (NLM) · 1970

            PubMed: Pelargonium Sidoides — dose response

            Live PubMed search

            Live results for "Pelargonium Sidoides dose response" across the PubMed/MEDLINE peer-reviewed index.

            Key findings

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

            Open study
            Systematic reviewGoogle Scholar · 1970

            Google Scholar: Pelargonium Sidoides — clinical evidence

            Live Scholar search

            Cross-database citation index for Pelargonium Sidoides 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.