Evidence supporting the use of: Fennel
For the health condition: Cough (general)

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Synopsis

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

Fennel (Foeniculum vulgare) has a long history of use in traditional medicine systems, particularly in Ayurveda, Traditional Chinese Medicine, and European herbalism, for the relief of coughs and other respiratory complaints. Traditionally, fennel seeds and their essential oil have been valued for their expectorant properties—helping to loosen and clear mucus from the respiratory tract. Historical texts and ethnobotanical records frequently cite fennel tea or decoctions as remedies for soothing sore throats, calming coughs, and alleviating bronchial irritation.

Modern scientific evidence supporting these uses is limited but not entirely absent. Some laboratory studies suggest that fennel possesses mild antispasmodic and anti-inflammatory properties, which may help reduce the urge to cough and soothe irritated airways. The essential oil contains compounds such as anethole and fenchone, which have shown some activity against bacteria and may help with mild respiratory infections. However, these findings are primarily from in vitro or animal studies, and robust human clinical trials are lacking.

Overall, the use of fennel for cough is primarily supported by traditional practices, with a modest level of evidence (rating: 2) based on historical usage and preliminary pharmacological research, rather than strong clinical validation.

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ophiopogon root
orange
oregano
parsley
pear
perilla
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platycodon root
plum fruit
polygala root
pomegranate
pumpkin
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dodder
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menthol oil
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abies spectabilis
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Alpha-terpineol
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acacia
Agave
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Abrus
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banana
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cola nut
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