's remedy and good for relieving tummy upsets and burpsPeppermint  Good for tummy troubles and sinus congestionPulsatilla  Helps relieve coughs and coldsTea Tree  Anti-bacterial and ant-fungal. Use on cuts and grazes, sports, warts, cold sores and mouth

 extreme nasal congestion. Sinus problems may also be exacerbated.How common is it?About 15 per cent of the population in all industrialised countries. Over 10 million people in the UK, accounting for 2.5 per cent of all GP visits and costing around £50 million