Honey and onion syrup: Scientific evidence on cough relief

While honey is recognized by the National Institute for Health and Care Excellence (NICE) as a potential self-help option for acute cough in individuals over one year old, scientific evidence regarding its benefits remains limited. Research has noted a reduction in the frequency and intensity of coughs in children during short-term monitoring, but there is no data suggesting honey shortens the total duration of a cough.

Medical guidelines do not establish onion and honey syrup as a proven therapy, nor do they support claims that onions in such mixtures treat infections. Health experts warn that honey should never be given to infants under 12 months old due to the risk of infant botulism.

According to the NHS, coughs often resolve within three to four weeks. A medical consultation is recommended if a cough persists longer than three weeks, or if symptoms such as difficulty breathing, chest pain, coughing up blood, or sudden worsening occur.