THYME

Rich in the powerful oil thymol, this herb has potent antiseptic and antibiotic properties, which make it a popular remedy for coughs, throat and chest infections and bronchitis. It contains flavonoids that relax muscles in the trachea linked to coughing and inflammation.

Eat it: Thyme enhances the flavour of roasted vegetables such as carrots, swede, butternut squash and potatoes. To make a cough-soothing tea, add two teaspoons of crushed fresh or dried leaves in a cup of hot water and leave to infuse for around 10 minutes.