Synopsis

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

Black seed (Nigella sativa) has a long history of use in traditional medicine systems, particularly within the Middle East, South Asia, and parts of Africa. Traditional healers have used black seed oil and preparations for a wide range of respiratory complaints, including bronchial congestion, asthma, and coughs. The rationale for its use stems from its reputed ability to reduce inflammation, act as a mild expectorant, and soothe respiratory tract irritation. The seeds contain thymoquinone, which has been shown in laboratory studies to exhibit anti-inflammatory and antioxidant effects.

However, direct scientific studies investigating black seed’s efficacy specifically for bronchial congestion in humans are limited. Most available data are preclinical or animal studies, or focus on related conditions such as asthma or allergic rhinitis. Some small clinical trials suggest possible benefits for asthma symptoms, but these findings cannot be directly extrapolated to bronchial congestion due to infection or non-allergic causes. Overall, the evidence base remains largely traditional, with modest scientific support in related respiratory applications but insufficient high-quality data for congestion specifically. As such, black seed is primarily justified by historical use for this indication, with a low-to-moderate level of supporting evidence.

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More about Congestion (bronchial)

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