NSAID Classification and Therapeutic Uses Explained
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Classification and Therapeutic Uses of NSAIDs
Classification of NSAIDs
NSAIDs (Non-Steroidal Anti-Inflammatory Drugs) are classified based on their chemical structure or COX (cyclooxygenase) enzyme selectivity.
I. Classification by COX Selectivity
1. Non-selective COX Inhibitors
These inhibit both COX-1 and COX-2 enzymes:
- Aspirin (acetylsalicylic acid)
- Ibuprofen
- Naproxen
- Indomethacin
- Ketorolac
- Diclofenac
- Piroxicam
2. Preferential COX-2 Inhibitors
These selectively inhibit COX-2 more than COX-1, but not exclusively:
- Meloxicam
- Nabumetone
- Etodolac
3. Selective COX-2 Inhibitors (Coxibs)
These minimally affect COX-1, resulting in lower GI side effects:
- Celecoxib
- Etoricoxib
- Parecoxib
- Valdecoxib (withdrawn in some countries due to cardiovascular risk)
- Rofecoxib (withdrawn globally)
II. Classification by Chemical Structure
1. Salicylates
- Aspirin
- Diflunisal
2. Propionic Acid Derivatives
- Ibuprofen
- Naproxen
- Ketoprofen
- Flurbiprofen
3. Acetic Acid Derivatives
- Diclofenac
- Indomethacin
- Etodolac
- Sulindac
4. Enolic Acid Derivatives (Oxicams)
- Piroxicam
- Meloxicam
- Tenoxicam
5. Fenamates (Anthranilic acid derivatives)
- Mefenamic acid
- Meclofenamic acid
6. Naphthylalkanones
- Nabumetone
7. Coxibs (COX-2 Selective)
- Celecoxib
- Etoricoxib
Therapeutic Uses of NSAIDs
NSAIDs are widely used for their analgesic, anti-inflammatory, and antipyretic properties.
1. Pain Relief (Analgesia)
- Headache
- Dysmenorrhea (menstrual pain)
- Dental pain
- Musculoskeletal pain (strains, sprains)
2. Anti-inflammatory Uses
- Rheumatoid arthritis (RA)
- Osteoarthritis (OA)
- Ankylosing spondylitis
- Gout (acute phase)
- Tendonitis, bursitis
3. Antipyretic Uses
- Fever (e.g., ibuprofen, aspirin)
4. Cardiovascular Use
Low-dose aspirin is used as an antiplatelet agent for:
- Prevention of myocardial infarction
- Prevention of stroke
- After angioplasty or stent placement
5. Post-operative or Post-traumatic Pain
- Short-term management with drugs like ketorolac
6. Patent Ductus Arteriosus (PDA) Closure
- Indomethacin or ibuprofen is used for PDA closure in preterm infants
Note on Adverse Effects
NSAIDs can cause:
- Gastrointestinal issues (gastritis, ulcers, bleeding)
- Renal impairment
- Increased cardiovascular risk (especially with COX-2 inhibitors)
- Hypersensitivity reactions
If you want a summarized table or chart format, I can provide that too.