Mechanism of action and pharmacology
The action of the drug Celecoxibum is based on the selective suppression of cyclooxygenase-2 (COX-2) activity. This targeted approach fundamentally distinguishes this medication from non-selective agents.
A pharmacokinetic feature of the drug is that its pharmacological effect develops slowly.
Key advantages of selectivity
Due to its selective effect on COX-2, this substance has important advantages in clinical practice:
- The three main therapeutic properties of nonsteroidal anti-inflammatory drugs are preserved.
- Gastroprotection is ensured: the gastric mucosa is not exposed to negative effects.
- There is no effect on platelet aggregation processes.
- Normal renal blood flow is maintained.
Indications for use
In medical practice, the drug is prescribed to patients with musculoskeletal disorders. The main indications for use are:
- Osteoarthritis.
- Rheumatoid arthritis.
Adverse reactions and risks
Various adverse reactions may occur during administration. Common manifestations include:
- Abdominal pain.
- Diarrhea.
- Allergic manifestations.
Special attention is paid to specific cardiovascular effects. This drug can cause class-specific complications, which include elevated blood pressure, as well as an increased risk of myocardial infarction, stroke, and dangerous thromboembolism.
Briefly: answers to topical questions
What are the absolute and relative contraindications to prescribing celecoxib?
Absolute contraindications to prescribing celecoxib include:
- age under 18 years for the capsule formulation;
- very high risk of cardiovascular complications;
- dual or triple anticoagulant therapy.
For patients with moderate or high risk of cardiovascular complications, celecoxib is recommended for short-term use.
Coxibs target only COX-2: the stomach is intact, but the heart is in the crosshairs.
Class and exam questions
What is the main mechanism of action of celecoxib?
The drug works through the selective inhibition of the cyclooxygenase-2 (COX-2) enzyme.
What advantages does the selectivity of the drug provide regarding the gastrointestinal tract and blood?
Due to its selectivity, there is no negative impact on the gastric mucosa (gastroprotection is provided), renal blood flow is preserved, and platelet aggregation is unaffected.
What are the specific side effects of this group of drugs?
Specific side effects of coxibs are related to the cardiovascular system: arterial hypertension may develop, along with an increased risk of myocardial infarction, stroke, and thromboembolism.
What else to study on this topic
- Comparison of selective and non-selective COX inhibitors
- Pharmacokinetic features and onset of effect
- Class-specific cardiovascular risks of coxibs
- Effect on renal blood flow and water-electrolyte balance
- Indications and limitations in rheumatoid arthritis and osteoarthritis
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