To stop a runny nose. To feel fresh. You only need water. Nothing else. Dip the nose in water. Let it its work inside the nose. Blow out the snot. Feel refreshed.
For the throat. Gurgle PLAIN water. Then wait to spit out the flem.
For repeated coughing. I use hot water with lemon and hunny and recently I discovered that crispbread without anything on works great.