1 Molecular mass (molecular weight) is the mass of one molecule of a substance and is expressed in the unified atomic mass units (u). (1 u is equal to 1/12 the mass of one atom of carbon-12)  Molar mass (molar weight) is the mass of one mole of a substance and is expressed in g/mol.
Amoxicillin fights bacteria in the body. Clavulanate potassium is a form of clavulanic acid, which is similar to penicillin. Clavulanate potassium fights bacteria that is often resistant to penicillins and other antibiotics.
Plavix (clopidogrel bisulfate) is a thienopyridine class of drug that inhibits platelet aggregation and thus inhibits aspects of blood clotting. Plavix is available in the generic form termed clopidogrel bisulfate. Plavix is used to treat patients with acute coronary syndrome, myocardial infarction (MI), peripheral vascular disease and some stroke (ischemic type) patients. The most common side effects of Plavix include increased bleeding, nosebleeds, headaches, and bruising.