Clinical Pharmacology Details


Piroxicam


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Indications & Dose:

Rheumatic  disease:


ADULT:



initially 20 mg daily, maintenance 10-30 mg daily, in single or divided doses.


Acute musculoskeletal disorders



40 mg daily in single or divided doses for 2 days, then 20 mg daily for 7-14 days.


Acute gout



40 mg initially then 40 mg daily in single or divided doses for 4-6 days.


Musculoskeletal disorders:



Initially 40mg daily for 2 days then 20mg daily for 714 days.


Postoperative and post-traumatic pain:



40mg daily in single or divided doses for first two days, then 20mg once daily.


Primary dysmenorrhoea:



40mg once daily for first two days, then 20mg once daily for 2-3 days.



injection into gluteal muscle, for initial treatment of acute conditions, as dose by mouth (on short-term basis). For maintenance use oral preparations.


Dental & minor surgery


BY MOUTH


20mg daily as a single dose.


Orthopaedic surgery:



 40 mg daily for 2 days than 20mg daily as a single dose


Dispersable tablets may be swallowed whole or dispersed in 50ml of water


Elderly


Use lowest effective dose, monitor for GI bleeding for 4 weeks after initiation of therapy.


Children


(over 6 years) by mouth, juvenile arthritis, less than 15kg,  5 mg daily; 16-25 kg, 10 mg; 26-45 kg, 15 mg; over 46 kg, 20 mg.


Children


Under 6 years not recommended . 


 

Contraindications:

Bronchospasm, nasal polyps and angioedema precipitated by aspirin or other NSAIDs

Side Effects:

Cautions:

Precautions:

History of GI ulceration, bleeding, or perforation; renal dysfunction, hypertension. or cardiac conditions aggravated by fluid retention and edema, history of liver dysfunction, history of coagulation 

Interaction:

Drugs


Aminoglycosides: Reduced clearance with elevated aminoglycoside levels and, potential for toxicity (especially indomethacin in premature infants; other NSAIDs probably)


Anticoagulants: Excessive hypoprothrombinernia, decreased platelet aggregation with increased risk of GI bleeding


Antihypertensives (a-blockers, angiotensin-converting enzyme inhibitors, angiotensin ll receptor blockers, β blockers, diuretics): Inhibition of antihypertensive and other favorable hemodynamic effects


Corticosteroids: Increased risk of GI ulceration


Cyclosporine: Increased nephrotoxicity risk


Lithium: Decreased clearance of lithium (mediated via prostaglandins) resulting in elevated serum lithium levels and risk of toxicity


Methotrexate: Decreased renal secretion of methotrexate resulting in elevated methotrexate levels and risk of toxicity


Phenylpropaoalamine: Possible acute hypertensive reaction


Potassium-sparing diuretics: Additive hyperkalemia is potential


Triamterene: Acute renal failure reported with addition of indomethacin; caution with other NSAIDs  


 

Warnings:

Adverse Effects:

Lactations:

(avoid administration near term); excreted into breast milk: approximately 1 % of mother’s serum levels; should not present a risk to nursing infant 

Special Precautions:

Counselling:

Side Effects Or Adverse Reactions:

CNS: Anxiety, confusion, depression, dizziness, drowsiness, fatigue, headache, insomnia, tremors
CV: Dysrhythmias, palpitations, peripheral edema, tachycardia
EENT: Blurred vision, hearing loss, tinnitus .
GI: Anorexia, bleeding, cholestatic hepatitis, constipation, cramps, diarrhea, dry mouth, flatulence, jaundice, nausea, perforation, ulceration, vomiting
GU: Nephrotoxicity
HEME: Blood dyscrasias
SKIN: Photosensitivity, pruritus, purpura, rash, sweating 

Patient And Carer Advice: