Etofibrate is a fibrate. It is a combination of clofibrate and niacin, linked together by an ester bond. In the body, clofibrate and niacin separate and are released gradually, in a manner similar to controlled-release formulations. Etofibrate is a fibrate. It is a combination of clofibrate and niacin, linked together by an ester bond. In the body, clofibrate and niacin separate and are released gradually, in a manner similar to controlled-release formulations. Template:Chemical-stub