Amicar is the common name for 6-aminohexanoic acid, a chemical that acts as a fibrinolysis inhibitor with a mechanism of action that is thought to be inhibition of plasminogen activators. After prolonged dosage, Amicar is found to have penetrated through the extra vascular and intravascular body compartments and into red blood cells and other tissue cells. Amicar is used to help maintain homeostasis when fibrinolysis leads to bleeding. This is usually associated with complications due to heart surgery. Side effects include nausea, cramps, diarrhea, hypertension, headache, and skin rash.