You can't, symptom. Relief only. Cold tips: for sore throat – gargle with warm salt water (1/2 tsp salt in 8 oz of water). * for congestion – saline nose drops or a neti pot. *for anti-inflammatory effect & mobilizing mucus- homemade chicken noodle soup.**for hydration- lots of water. Try clear broth. * add honey & a small amt. Of lemon juice to chamomile tea.
You can't. There is no cure for a cold. Most colds last 10 to 14 days. The best you can do is help to alleviate the symptoms with otc medications.