Echinacea can be used to help recovery from colds, flu etc, and this can be taken until you are better. You could also try Biostrath.
Use Bronchoforce to counter the cough, drink plenty of water and eat fresh fruit regularly.
Do you have questions? Please feel free to ask.
Stay up to date with the latest pollen information by finding your local pollen forecast from over 30,000 locations across the UK.