According to me their isnâ€™t any drug for bird flu that can guarantee a complete end to Avian flu but tamiflu is the best among the lot. It gives the best if not full protection against avian flu. Tamiflu marks the beginning of the magic. Tamiflu is a short time but still the forty eight hours becomes crucial. More to this is the fact that Tamiflu can reduce the chances of attracting the H5N1 virus when the flu out break looms freely around you..