indication

• Prevention of cardiovascular events such as stroke
• Acute treatment of cerebral infarction, myocardial infarction
• Thromboprophylaxis due to atrial fibrillation

pharmacology

Triflusal is an antithrombotic anticoagulant. It irreversibly inhibits the production of thromboxane-B2 in platelets by acetylating cycloxygenase-1. Triflusal affects many other targets such as NF kappa B, which is a gene expression regulatory factor for cycloxygenase-a and cytokines. Numerous studies comparing the efficacy and safety profile (i.e. systemic hemorrhage) between triflusal and acetylsalsylic acid has shown either no significant difference or a better effacy and safety profile for triflusal. Triflusal has been shown to protect cerebral tissue due to its inhibition of lipid peroxidation resulting from anoxia-reoxygenation.

mechanism of action

Triflusal is chemically related to acetylsalicylic acid (ASA) and irreversibly inhibits cycloxygenase-1 (COX-1) in platelets. Acetylation of the active group of COX-1 prevents the formation of thromboxane-B2 in platelets. However, it is unique because it spares the arachidonic acid metabolic pathway in endothelial cells. In addition, it favors the production of nitric oxide, a vasodilator.

toxicity

Excessive bleeding. The risk of bleeding is less than that of acetylsalicylic acid.

biotransformation

In the liver, triflusal undergoes deacetylation, forming its main metabolite 2-OH-4-trifluoromethyl benzoic acid (HTB).

absorption

Absorbed in the small intestine with a bioavailability range from 83% to 100%. There is no significant difference between the absorption of the oral solution and capsule formulation.

half life

In healthy human, the half life is 0.5 +/- 0.1h, while that of HTB is 34.3 +/- 5.3h.

route of elimination

Primarily renal.

drug interactions

Ibuprofen: The metabolite of triflusal, 2-hydroxy-4-trifluoro-methyl-benzoic acid (HTB), impairs the serum protein binding of ibuprofen to the same extent as acetylsalisylic acid. Thus, the free fraction of glisentide may be increased. A dosage reduction may be required if used in combination.

Naproxen: The metabolite of triflusal, 2-hydroxy-4-trifluoro-methyl-benzoic acid (HTB), impairs the serum protein binding of naproxen to the same extent as acetylsalisylic acid. Thus, the free fraction of glisentide may be increased. A dosage reduction may be required if used in combination.

Piroxicam: The metabolite of triflusal, 2-hydroxy-4-trifluoro-methyl-benzoic acid (HTB), impairs the serum protein binding of glisentide to the same extent as acetylsalisylic acid. Thus, the free fraction of glisentide may be increased. A dosage reduction may be required if used in combination.

Warfarin: The metabolite of triflusal, 2-hydroxy-4-trifluoro-methyl-benzoic acid (HTB), impairs the serum protein binding of warfarin to the same extent as acetylsalisylic acid. Thus, the free fraction of glisentide may be increased. A dosage reduction may be required if used in combination.