Adult butterflies also use color to their advantageânot only to blend in but also to warn. For instance, the adult monarch sports a bright orange color and distinctive pattern, a red flag to potential predators that it's distasteful and toxic.
Drugs to improve blood flow for people who have poor blood circulation in the veins of their legs. Background. Insufficient blood circulation in the veins of the legs might be caused by genetic factors, may occur after trauma, or may result from a blood clot. Poor movement of blood up the legs may cause swelling and puffiness, feelings of heaviness, tingling, cramps, pain, varicose veins and changes in skin pigmentation. If severe insufficient blood circulation occurs, ulcers and skin wasting can develop. Drugs such as natural flavonoids extracted from plants and similar synthetic products may improve blood circulation. These drugs are known collectively as venoactive drugs or phlebotonics.
How stroke medications work. There are several kinds of medications that doctors may administer or prescribe to a stroke patient: tPA, a clot buster; blood thinners; and drugs that lower high blood pressure and cholesterol.tPA (tissue plasminogen activator) Thrombolytic drugs such as tPA are often called clot busters.ow to take your medication. Some stroke medications treat stroke and some help prevent it. They all work in different ways. Some may help lower your blood pressure, reduce the level of cholesterol in your blood or help your body get rid of excess fluids that make it difficult for your heart to pump blood.