One frequent ailment following giardia is dehydration. This can be combatted by drinking a lot of water and eating lots of fruits and veggies. Melon is really good for it. High water content foods are best after this condition, easier to digest. Fruit dosn't break down in the stomach, it passes through and breaks down on its own in the intestines. This makes recovery easier.

A good way to balance the intestines after this condition is lactobacillus. It replaces the good bacteria of the intestines that have been largely damaged by the giardia and speeds recovery.

Mike Maguire