Thromboxane B2 is an inactive metabolite/product of thromboxane A2. It is almost completely cleared in the urine.
It itself is not involved in platelet activation and aggregation in case of a wound, but its precursor, thromboxane A2, is. Thromboxane A2 synthesis is the target of the drug aspirin, which inhibits the COX-1 enzyme (the source of thromboxane A2 in platelets).
Thromboxane is a member of the family of lipids known as eicosanoids. The two major thromboxanes are thromboxane A2 and thromboxane B2.
Thromboxane is named for its role in clot formation (thrombosis).
Antioxidative and anti-inflammatory actions of docosahexaenoic acid and
eicosapentaenoic acid in renal epithelial cells and macrophages.
Kim YJ, Chung HY.
J Med Food. 2007 Jun;10(2):225-31.
PMID: 17651056
doi:10.1089/jmf.2006.092.