Garlic para 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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Conclusão

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 Efeito: or 14 P=0.038

População: None

Other 17.3 weeks

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

Dose: None vs: None Outcome: None Efeito: None None

População: Alzheimer's disease patients

Review

Treatment of the common cold in children and adults.

Dose: None vs: None Outcome: infection rate Efeito: None None

População: None

Review

Chemoprevention of bladder cancer.

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

População: Bladder cancer patients

Meta-Analysis

Unsafe and potentially safe herbal therapies.

Dose: None vs: None Outcome: lipid levels Efeito: None None

População: hypertensive patients

Key Statistics

Estudos

300

Participantes

↑

Positive

Nota

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 citações

Unsafe and potentially safe herbal therapies. Meta-Analysis

American journal of … 1999 226 citações

Dosage & Usage

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

Dosagens Comumente Utilizadas

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

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

Dosagens Estudadas em Pesquisas

Dosagem	Duração	Efeito	N
20.0%	3 weeks	Mixed	80
None	17.3 weeks	Positive	--
None	--	Mixed	--
Various nutrients (selenium, vitamins, green tea)	--	Positive	--
None	--	Mixed	--

Melhor horário: With meals to reduce GI discomfort

Safety & Side Effects

Efeitos Colaterais Relatados

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

Interações Conhecidas

● 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)

Ingestão máxima tolerável: No established UL; high doses may increase bleeding risk

Consulte sempre o seu profissional de saúde antes de iniciar qualquer suplemento.Sempre consulte seu profissional de saúde antes de iniciar qualquer suplemento.

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

Outros ingredientes para Upper Respiratory Tract Infections

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

Veredito Rápido

Evidence Strength72%

High confidence

Detalhamento dos Estudos

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

Comparar Alternativas

Veja como outros ingredientes se comparam para esta condição.

Ver todos os ingredientes para Upper Respiratory Tract Infections

Saiba Mais

Aviso Legal da FDA: Estas declarações não foram avaliadas pela Food and Drug Administration. Os produtos e informações neste site não se destinam a diagnosticar, tratar, curar ou prevenir qualquer doença. As notas de evidência apresentadas são baseadas em nossa análise de pesquisas revisadas por pares publicadas e não constituem aconselhamento médico. Sempre consulte seu profissional de saúde antes de iniciar qualquer regime de suplementação.