Bronchicum syrup for children and adults for cough It is a herbal supplement for treating dry, chesty cough. Available in 100ml size Contains liquid thyme extract, liquid evening primrose root extract and ethanol. About this product Bronchicum Elixir Don't let a sweet moment pass you by because of a cough Ingredients of Bronchicum cough syrup Bronchicum elixir syrup contains liquid thyme extract, liquid evening primrose root extract, sucrose syrup, caramel and sugar. Thyme extract : helps soothe coughs and relieves the symptoms of pneumonia. It also has antifungal properties and contains vitamin C, which helps improve immunity, and vitamin A. Evening primrose root extract : It has an expectorant effect, making phlegm less dense, which makes it easier to cough up.