Apple Cider Vinegar - the real brewed stuff, not the apple juice and vinegar synthetic muck.

One teaspoonfull (also one of honey helps too) in a glass (about 200 ml) of warm/tepid water. Ginger helps too. Sip slowly.

Bonnigton's Irish Moss. (contains carigeenan - the 'active' ingredient) carigeenan is an extract of seaweed. Available in liquid form (now without alcohol for the kiddies - easily fixed - add 5% vodka!) and lozenge form.

Robin