It's too late for elderberry tincture now, but you might want to make this for future attacks. Elderberry has been proven in laboratory studies to prevent the influenza virus from replicating-thereby preventing a virus overload so your immune system has an easier time of neutralizing the virus. It does NOT prevent the flu, nor does it work for the common cold.
At the first onset of symptoms, take 2 tablespoons every 6 hours for 8-10 days. You will start feeling better in only 2-3 days, but the virus will still be present so you need to take it for the full cure- just like antibiotics.
To make the tincture- fill a quart jar about 1/3 full of dried elderberries and fill the jar with 80proof or stronger VODKA. Don't use any other type of alcohol, it apparently doesn't work. Shake the capped bottle a couple of times, then store in a dark place for 7-10 days. Filter out the berries and discard them. FYI- 1 lb of dried elderberries will make 3 quarts of tincture.