Evidence supporting the use of: Garlic bulb
For the health condition: Congestion (sinus)

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Synopsis

Source of validity: Traditional
Rating (out of 5): 2

Garlic bulb (Allium sativum) has a long history of use in traditional medicine systems, including Ayurveda and folk remedies across Europe and Asia, for the relief of respiratory ailments such as sinus congestion. The primary rationale behind its traditional use is garlic’s pungent volatile compounds, especially allicin, which is released when garlic is crushed or chopped. These compounds are believed to have antimicrobial and possibly mucolytic (mucus-thinning) properties, which may help relieve sinus congestion by reducing inflammation and inhibiting the growth of certain pathogens that can contribute to sinus infections.

However, while in vitro (test tube) studies have demonstrated that garlic extracts possess antibacterial, antiviral, and antifungal activities, and animal studies have suggested anti-inflammatory effects, there is currently a lack of high-quality clinical trials specifically examining garlic’s efficacy in treating or relieving sinus congestion in humans. Most of the evidence supporting this use comes from traditional practices and anecdotal reports rather than from rigorous scientific studies. Thus, the evidence rating is moderate-to-low (2/5), reflecting promising, but unproven, potential. Caution should be exercised, as consuming raw garlic in excess can cause irritation to mucous membranes, and topical application to the nasal passages is not recommended due to the risk of burns or irritation.

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