Dengue cases infest Philippines every year. Young and old maybe infected by dengue fever brought by a kind of mosquito that causes internal hemorrhage even to a point it causes death. Experts have not come up of medicine for the said disease yet. But in the Philippines, a kind of weed called tawa tawa or gatas gatas is said to be an effective cure of dengue. Many have attested the effectiveness of the said plant, patient who have tried it and were eventually cured.
According to Answers.com, tawa-tawa does not fight dengue virus. instead, it only promotes the development of blood platelets and softens the effect of the dengue virus. Tawa-tawa has natural enzymes within that stabilize the membranes of the blood vessels, preventing internal bleeding.
A photo of actual tawa tawa weed that I took near our office.