Piroxicam

Piroxicam

File:Piroxicam.svg
Clinical data
Pregnancy category	C, D if used in the third trimester or near delivery
ATC code	M01AC01 (WHO) M02AA07 (WHO), S01BC06 (WHO)
Pharmacokinetic data
Metabolism	4 to 10% renal
Elimination half-life	30 to 86 hours
Excretion	4 to 10% renal
Identifiers
IUPAC name (8E)-8-[hydroxy-(pyridin-2-ylamino)methylidene]- 9-methyl-10,10-dioxo-10λ6-thia-9-azabicyclo[4.4.0] deca-1,3,5-trien-7-one
CAS Number	36322-90-4
PubChem CID	5280452
DrugBank	APRD01187
E number	{{#property:P628}}
ECHA InfoCard	{{#property:P2566}}
Chemical and physical data
Formula	C15H13N3O4S
Molar mass	331.348 g/mol

Piroxicam (marketed in the U.S. under the trade name Feldene) is a non-steroidal anti-inflammatory drug used to relieve the symptoms of rheumatoid and osteoarthritis, primary dysmenorrhoea, postoperative pain; and act as an analgesic, especially where there is an inflammatory component. It is also used in veterinary medicine to treat certain neoplasias expressing cyclooxygenase (COX) receptors, such as bladder, colon, and prostate cancers.

Other brand names for Piroxicam include "Brexin," "Erazon," "Felden", "Feldoral," "Hotemin," "Pirox von ct," "Proponol," "Reumador," "Veral," and "Vurdon."

Mechanism of action

Main article: Non-steroidal anti-inflammatory drug

Piroxicam is an NSAID and, as such, is a non-selective COX inhibitor possessing both analgesic and antipyretic properties. It undergoes entero-hepatic circulation.

Adverse effects

Main article: Non-steroidal anti-inflammatory drug

Piroxicam use can result in gastrointestinal toxicity, tinnitus, dizziness, headache, rash, and pruritus. The most severe adverse reactions are peptic ulceration and gastrointestinal bleeding. Approximately 30% of all patients receiving daily doses of 20 mg of piroxicam experience side effects.

Piroxicam may cause skin to become more sensitive to sunlight. Avoidance of sunlight and use of sunscreen is recommended.