Echinacea is well known for its immune-system modulating effects.It is used for all manner of infections, from colds and 'flu, urinary infections to post-viral fatigue. It may also be used to prevent colds and 'flu. Suitable for children.Some authorities suggest it is best to take breaks from using Echinacea. In acute conditions, regular, higher doses are required. In chronic infections, smaller doses over the long term are more effective. Avoid when taking immuno-supressant therapy. Seek advice during pregnancy.