Metaprolol is a Beta-Blocker. It is not a blood thinner. It works to inhibit part of the parasympathetic nervous system. It is generally used to treat such things as high blâ¦ood pressure, fast heart rates, and to help the heart contract harder to put out more blood volume. Some common Blood Thinnners are Heparin, Lovenox, Warfarin (Coumadin), and Pradaxa.
Standard Industrial Classification - SIC Code. DEFINITION of 'Standard Industrial Classification - SIC Code'. A standard series of four-digit codes created by the U.S. government in 1937 for categorizing business activities. In 1997, the use of SIC codes was replaced in most (but not all) capacities by a six-digit code called the North American Industry Classification System (NAICS).
NAICS Structure. NAICS industries are identified by a 6-digit code, in contrast to the 4-digit SIC code. The longer code accommodates the larger number of sectors and allows more flexibility in designating subsectors. It also provides for additional detail not necessarily appropriate for all three NAICS countries.