Keva Cough Syrup is blended with all natural ingredients which are internationally proven to be helpful in different conditions such as Cold, cough, respiratory infections, flu & sore throat.The Keva herbal cough syrup combination medication is used to temporarily treat symptoms caused by the common cold, flu, allergies, or other breathing illnesses. Keva natural & herbal syrup is that affects a certain part of the brain, reducing the urge to cough.