Coughs usually go away by themselves within three weeks, according to the NHS.
The best way to get rid of a cough is to get plenty of rest, drink plenty of fluids, and drink hot lemon with honey, it said.
A pharmacist can usually give you advice for treating a cough.
But, marshmallow root supplements could help to relieve signs of the condition, studies have claimed.
“For anyone suffering from a sore throat, cough or cold, marshmallow root can be taken orally to reduce pain, swelling and congestion,” said nutritionist Dr Josh Axe.
“Its antitussive properties and mucilage abilities allow it to decrease irritation of the throat, reduce swelling in the lymph nodes, speed up healing time and reduce aggravating dry coughing.
“This is exactly the reason that marshmallow extract is added to many cough syrups and throat lozenges.
“It’s one of the most effective natural cough remedies.”
Marshmallow root supplements could also suppress the urge to cough, studies revealed.
Try combining the supplements with other anti-inflammatory and antibacterial herbs for the best effect, said the nutritionist.
You could also treat a cough by taking some cough syrups and lozenges.
While they don’t work to get rid of the cough, they may help to suppress some of the symptoms.
See a GP if your cough has lasted longer than three weeks, the NHS advised.
Chest pain or unexplained weight loss are also signs that you should see a doctor about your cough.
Most coughs are caused by a cold or the flu virus.
You’re more at risk of developing a cough if you suffer from heartburn, allergies, or infections like bronchitis