If the sore throat develops, you will develop a temperature and sneezing etc
Then I recommend Lemsip Max Sachets, get the ones from the pharmacy, they are stronger.....
1000 mg paracetamol (painkiller and fever reducer)
60 mg pseudoephedrine (nasal decongestant)
or you can have a look outside for something with paracetamol and pseudoephedrine