Pharmacology Of Tenoxicam

Indication For the treatment of rheumatoid arthritis, osteoarthritis, backache, and pain.
Pharmacodynamics Tenoxicam, an antiinflammatory agent with analgesic and antipyretic properties, is used to treat osteoarthritis and control acute pain.
Mechanism of action The antiinflammatory effects of tenoxicam may result from the inhibition of the enzyme cycooxygenase and the subsequent peripheral inhibition of prostaglandin synthesis. As prostaglandins sensitize pain receptors, their inhibition accounts for the peripheral analgesic effects of tenoxicam. Antipyresis may occur by central action on the hypothalamus, resulting in peripheral dilation, increased cutaneous blood flow, and subsequent heat loss.
Absorption Oral absorption of tenoxicam is rapid and complete (absolute bioavailability 100%).
Volume of distribution Not Available
Protein binding 99%
Metabolism Tenoxicam is metabolized in the liver to several pharmacologically inactive metabolites (mainly 5'-hydroxy-tenoxicam).
Route of elimination Not Available
Half life 72 hours (range 59 to 74 hours)
Clearance Not Available
Toxicity Not Available