Synopsis

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

Neem (Azadirachta indica) has been used in traditional medicine systems, particularly Ayurveda and Unani, for managing a variety of ailments, including respiratory infections and symptoms associated with colds. The historical use of neem encompasses its application as an antimicrobial and antiviral agent, with neem leaves, bark, and extracts being used in teas, poultices, or inhalations for relief from coughs, colds, and other respiratory complaints. However, while these traditional uses are well documented in ethnomedical literature, the direct evidence for neem’s effectiveness against the common cold (usually caused by rhinoviruses and coronaviruses) remains limited.

Some laboratory studies have demonstrated that neem extracts exhibit antiviral activity against certain viruses, such as herpes simplex and dengue virus, but there is little to no clinical or in vitro evidence directly supporting neem’s efficacy against the viruses responsible for the common cold. Most claims regarding its antiviral activity for colds are extrapolated from its broad-spectrum antimicrobial properties and its long-standing use in folk medicine. Thus, while neem is traditionally used for colds, scientific validation specific to this condition is insufficient, and its use is primarily supported by historical and cultural practices rather than robust clinical evidence.

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