First thing that crossed mine mind was home remedy made of onion. But it seems like people already beat me to it. Never mind though, here's a "recipe" for hard core version of it. For manly man only,
Step 1: Take three medium sized onions.
Step 2: Wash them thoroughly and do not peel them (most important step)
Step 3: Cut them in quarters and boil them in 1 liter of water until 1/3 of water evaporates
Step 4: Throw away the onions and drink remaining water in sips during entire day
There is some girly version of it, where you would sweeten it with honey. But if you wanted to be girly pants you would ask for something made of dandelion, honey, lemons, oranges, ginger root, sugar and other similar stuff.