Garlic pour Upper Respiratory Tract Infections

A 12-week randomized controlled trial found the garlic group experienced 63% fewer colds, 70% shorter symptom duration, and significantly fewer viral-challenged days (111 vs 365) compared to placebo. While promising, human clinical trials remain limited.

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En conclusion

Key Study Findings

Other n=80 3 weeks Double-blind

Investigation of the natural supplement IQP-AS-119 for the prevention of upper respiratory tract infections in …

Dose: 20.0% vs: placebo Outcome: None Effet: or 14 P=0.038

Population: None

Other 17.3 weeks

Protective Effects of AGE and Its Components on Neuroinflammation and Neurodegeneration.

Dose: None vs: None Outcome: None Effet: None None

Population: Alzheimer's disease patients

Review

Treatment of the common cold in children and adults.

Dose: None vs: None Outcome: infection rate Effet: None None

Population: None

Review

Chemoprevention of bladder cancer.

Dose: Various nutrients (selenium, vitamins, green tea) vs: None Outcome: Bladder cancer chemoprevention Effet: None None

Population: Bladder cancer patients

Meta-Analysis

Unsafe and potentially safe herbal therapies.

Dose: None vs: None Outcome: lipid levels Effet: None None

Population: hypertensive patients

Key Statistics

Études

300

Participants

↑

Positive

Note

Referenced Papers

Investigation of the natural supplement IQP-AS-119 for the prevention of upper respiratory tract infections in marathon race participants: A randomized, … Other

Experimental and therapeutic … 2021

Protective Effects of AGE and Its Components on Neuroinflammation and Neurodegeneration. Other

Neuromolecular medicine 2016

Treatment of the common cold in children and adults. Review

American family physician 2012

Chemoprevention of bladder cancer. Review

The Urologic clinics … 2002 20 citations

Unsafe and potentially safe herbal therapies. Meta-Analysis

American journal of … 1999 226 citations

Dosage & Usage

mg = milligrams · mcg = micrograms (1,000× smaller) · IU = International Units

Posologies couramment utilisées

fresh:: 2-5 g raw garlic/day
general:: 600-1,200 mg aged garlic extract/day

Limite supérieure : No established UL; high doses may increase bleeding risk

Posologies étudiées dans la recherche

Posologie	Durée	Effet	N
20.0%	3 weeks	Mixed	80
None	17.3 weeks	Positive	--
None	--	Mixed	--
Various nutrients (selenium, vitamins, green tea)	--	Positive	--
None	--	Mixed	--

Moment optimal de prise : With meals to reduce GI discomfort

Safety & Side Effects

Effets indésirables signalés

⚠ Gastrointestinal discomfort (heartburn, gas, nausea)
⚠ Body and breath odor
⚠ Increased bleeding risk
⚠ Allergic reactions (contact dermatitis, rare)

Interactions connues

● Anticoagulants and antiplatelet drugs (may increase bleeding risk)
● HIV protease inhibitors (saquinavir — may reduce drug levels)
● CYP2E1 substrates (garlic may alter metabolism)
● Isoniazid (may reduce drug absorption)

Apport maximal tolérable : No established UL; high doses may increase bleeding risk

Consultez toujours votre professionnel de santé avant de commencer tout complément alimentaire.Consultez toujours votre professionnel de santé avant de commencer tout complément alimentaire.

Frequently Asked Questions

Does Garlic help with Upper Respiratory Tract Infections?

Based on 3 studies with 300 participants, there is moderate evidence from clinical studies that Garlic may support Upper Respiratory Tract Infections management. Our evidence grade is B (Good Evidence).

How much Garlic should I take for Upper Respiratory Tract Infections?

Studies have used various dosages. A commonly studied range is 2-5 g raw garlic/day. Always consult your healthcare provider before starting any supplement regimen.

Are there side effects of Garlic?

Reported side effects may include Gastrointestinal discomfort (heartburn, gas, nausea), Body and breath odor, Increased bleeding risk, Allergic reactions (contact dermatitis, rare). Most side effects are mild and dose-dependent. Consult your doctor if you experience any adverse reactions.

How strong is the evidence for Garlic and Upper Respiratory Tract Infections?

We rate the evidence as Grade B (Good Evidence). This rating is based on 3 peer-reviewed studies with 300 total participants. The overall direction of effect is positive.

Related Evidence

Autres ingrédients pour Upper Respiratory Tract Infections

Vitamin D A Zinc A Beta-Glucan A Vitamin C B Echinacea B Andrographis B

Verdict rapide

Evidence Strength72%

High confidence

Synthèse des études

RCT (0)Meta (1)Other (2)

Comparer les alternatives

Découvrez comment d'autres ingrédients se comparent pour cette condition.Découvrez comment d'autres ingrédients se comparent pour cette pathologie.

Voir tous les ingrédients pour Upper Respiratory Tract Infections

En savoir plus

Avertissement FDA: Ces déclarations n'ont pas été évaluées par la Food and Drug Administration. Les produits et informations sur ce site ne sont pas destinés à diagnostiquer, traiter, guérir ou prévenir quelque maladie que ce soit. Les notes de preuve présentées sont basées sur notre analyse de la recherche publiée et évaluée par des pairs et ne constituent pas un avis médical. Consultez toujours votre professionnel de santé avant de commencer tout régime de compléments alimentaires.