The common cold is caused by a virus, and they’re spread between people very easily, said the NHS. A cold is spread by the germs from coughs and sneezes, and they can live on surfaces for up to 24 hours. But you could lower your risk of becoming infected with a cold or the flu by taking certain supplements. Ginseng supplements may help to protect against the viruses, scientists have claimed. Related articles Best supplements to combat cold and flu: Remedies to fight illness Best supplements to avoid cold and flu this winter: Four remedies Ginseng can affect certain aspects of the immune system University of California, Berkeley Taking regular ginseng capsules could boost the immune system, which helps to prevent infection, according to the University of California, Berkeley. Just two daily supplements throughout the winter may be enough to reduce your risk of a cold, they said. But, once you’ve become infected, ginseng won’t help to relieve symptoms - that’s when you should speak to a pharmacist. “A cure for the common cold has been a holy grail for medical researchers and drug companies,” said Berkeley. “So far, however, nothing has worked. No wonder, then, that people are tempted by the cold-fighting and/or immunity-boosting claims made for many dietary supplements. “Like echinacea, ginseng can affect certain aspects of the immune system, though it’s not clear what practical significance this has. Best supplements for colds and flu: Add ginseng to your diet to avoid runny noses and a fever (Image: GETTY Images) “A few preliminary studies suggest that a patented standardised extract of North American ginseng, may help reduce the frequency and severity of colds when taken twice daily throughout the winter.” Ginseng could also help to relieve some signs of inflammation, as it contains potent antioxidants, nutritionists have claimed. It could even boost brain function, including memory, behaviour and mood. You could also lower your risk of colds and the flu by taking probiotic supplements, said Berkeley. They contain gut ‘friendly’ bacteria that strengthen immunity, it said. Related articles Best supplements for colds: 15p a day tablets could stop infections Flu: Can vitamin C supplements prevent you getting the virus? Best supplements for colds and flu: Symptoms of a cold include sneezing and a runny nose (Image: GETTY Images) 10 ways to get rid of cold and fluWed, September 27, 2017 Flu and the common cold share symptoms including sore throat, runny nose and sneezing. This is how to get better in 24 hours. Getty Images 1 of 11 10 ways to get over cold and flu If you come down with a cold, you’ll usually feel better within a week or two, said the NHS. There’s usually no need to see a doctor, and can be treated with over-the-counter medication, including decongestants and painkillers. You could have the common cold if you have a blocked or runny nose, sore throat, headache, muscle aches, and a fever. The best way to treat a cold is to rest up, and to drink plenty of water. Fruit juice or squash works just as well as water. But, you should speak to a GP if your symptoms don’t improve after three weeks, or if your symptoms suddenly get worse.All rights reserved for this news site express.co.uk and under his responsibility