Dopamine was first synthesized in a laboratory in 1910 by George Barger and James Ewens in England. This medication works by improving the pumping strength of the heart, and improves blood flow to the kidneys. In newborn babies, Dopamine continues to be the preferred treatment for very low blood pressure. Its effects, depending on dosage, include an increase in sodium excretion by the kidneys, an increase in urine output, an increase in heart rate, and an increase in blood pressure. At low doses, Dopamine increases heart muscle contraction force and heart rate, thereby increasing cardiac output and blood pressure. As far as the side effects are concerned, Dopamine may actually worsen kidney function. Besides, it can cause an irregular heartbeat, chest pain, vomiting, headache, or anxiety. It is, however, unclear if this medication is safe to use during pregnancy or breastfeeding. So, you need to consult your doctor before using it to make sure that it won't harm you or your unborn baby