Pirox Injection

Side Effects of Pirox Injection

GI disturbances, peptic ulcer, GI bleeding, headache, dizziness, blurred vision, tinnitus, skin rashes and pruritus. Haematological changes and photosensitivity. Potentially Fatal: Thrombocytopaenia and acute nephropathy. Toxic epidermal necrolysis and Stevens-Johnson syndrome.

Drug Interactions

Increased risk of hyperkalaemia when used with ACE inhibitors and potassium-sparing diuretics. Convulsions may occur when used with quinolones. Effects of phenytoin and sulfonylureas may be enhanced. Antihypertensive effects of ACE inhibitors, β-blockers and diuretics may be reduced. Increased risk of GI bleeding and ulceration when used with corticosteroids, SSRIs or antiplatelet agents. Increased risk of haematotoxicity when used with zidovudine. ACE inhibitors, ciclosporin, tacrolimus or diuretics may increase nephrotoxicity. Potentially Fatal: May potentiate anticoagulants. Increased levels of lithium, methotrexate and cardiac glycosides.

Contraindications

Hypersensitivity, active peptic ulceration, porphyria, pregnancy (3rd trimester) and lactation.

Mechanism of Action

Piroxicam is a NSAID, belonging to the oxicam group. It inhibits prostaglandin synthesis, reduces fever by acting on the heat-regulating center of the hypothalamus, inhibits platelet-aggregating substance thromboxane A2 and reduces pain receptor sensitivity. It also exerts anti-inflammatory effect by lysosomal stabilisation, kinin and leukotriene production, alteration of chemotactic factors and neutrophil activation inhibition. Absorption: Well absorbed from the GIT (oral); peak plasma concentrations 3-5 hr after an oral dose. Distribution: Detected in breast milk. Protein-binding: 99% Metabolism: Hepatic via hydroxylation and conjugation; undergoes enterohepatic recycling. Excretion: Mainly in urine (as metabolites and unchanged drug), faeces; elimination half-life: 50 hr.

Special Precautions

Elderly, childn <12 yr. Patients with infections, asthma, allergic disorders, haemorrhagic disorders or hypertension. Impaired renal, hepatic or cardiac function. Monitor for signs of liver, kidney, blood or eye disorders.

How to Use

Take orally with food and water, as directed by your physician.

How to Store

Keep in a cool, dry place away from sunlight and moisture.

Safety Concerns

• Alcohol: Avoid during treatment.
• Breastfeeding: Not recommended.
• Pregnancy: Contraindicated.
• Liver/Kidney: Use with caution.

Content Disclaimer

This content is for educational purposes only. Please consult your doctor before use.