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Anti-inflammatory

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Also Known As

Anti-inflammatory, Nonsteroidal anti-inflammatory drugs, NSAIDs, Anti-inflammatory agents, Non-opioid analgesics, COX inhibitors, Cyclooxygenase inhibitors, Anti-pyretic analgesics, Non-narcotic analgesics, Anti-rheumatic agents

Definition

Anti-inflammatory medications are a diverse group of pharmaceutical agents designed to reduce inflammation and associated symptoms such as pain, swelling, and fever. The most common class of anti-inflammatory medications is nonsteroidal anti-inflammatory drugs (NSAIDs), which produce their therapeutic effects primarily through inhibition of cyclooxygenase (COX) enzymes.1 These enzymes are responsible for the production of prostaglandins, which are hormone-like compounds that mediate various physiological processes including inflammation, pain sensation, and fever.2

The COX enzyme exists in at least two distinct isoforms: COX-1 and COX-2. COX-1 is constitutively expressed in most tissues and produces prostaglandins that maintain physiological functions such as gastric mucosal protection, platelet aggregation, and renal blood flow regulation.3 In contrast, COX-2 is primarily induced in response to inflammatory stimuli such as cytokines and is responsible for producing prostaglandins that contribute to the cardinal signs of inflammation: pain, heat, redness, and swelling.4

Anti-inflammatory medications can be classified based on their selectivity for COX enzymes. Non-selective NSAIDs inhibit both COX-1 and COX-2, while selective COX-2 inhibitors preferentially target the COX-2 enzyme.5 This selectivity profile influences both the therapeutic efficacy and side effect profile of these medications. Non-selective NSAIDs, while effective for inflammation, may cause gastric irritation and increased bleeding risk due to COX-1 inhibition, whereas selective COX-2 inhibitors generally spare gastric mucosa but may increase cardiovascular risks with long-term use.6

Beyond NSAIDs, other classes of anti-inflammatory medications include corticosteroids, which act by suppressing multiple inflammatory pathways, and disease-modifying antirheumatic drugs (DMARDs), which target specific components of the immune system involved in chronic inflammatory conditions.7 The selection of an appropriate anti-inflammatory agent depends on the underlying condition, severity of symptoms, patient-specific factors, and the risk-benefit profile of the medication.8

Clinical Context

Anti-inflammatory medications play a crucial role in modern clinical practice, serving as first-line agents for managing a wide spectrum of conditions characterized by pain, inflammation, and fever.1 The clinical application of these medications spans across multiple medical specialties, including rheumatology, orthopedics, primary care, and emergency medicine.

In acute settings, anti-inflammatory medications are commonly prescribed for conditions such as traumatic injuries, postoperative pain, dental procedures, and fever management.2 Their rapid onset of action makes them particularly valuable for providing symptomatic relief while the underlying condition resolves or receives definitive treatment.3 For instance, NSAIDs are frequently used following orthopedic surgeries or dental extractions to control both pain and the inflammatory response that contributes to discomfort and delayed healing.4

For chronic inflammatory conditions, anti-inflammatory medications form a cornerstone of long-term management strategies. Conditions such as osteoarthritis, rheumatoid arthritis, ankylosing spondylitis, and other inflammatory arthropathies often require ongoing anti-inflammatory therapy to maintain functional status and quality of life.5 In these contexts, the selection of specific anti-inflammatory agents involves careful consideration of efficacy, safety profile, comorbidities, and patient-specific factors.6

Patient selection for anti-inflammatory therapy requires thorough clinical assessment and risk stratification. Cardiovascular risk factors, gastrointestinal history, renal function, age, and concurrent medications all influence the choice of agent, dosage, and duration of treatment.7 For patients with elevated cardiovascular risk, naproxen may be preferred over other NSAIDs due to its relatively neutral cardiovascular profile, while those with a history of gastrointestinal bleeding might benefit from COX-2 selective inhibitors or traditional NSAIDs with concurrent gastroprotective agents.8

The administration of anti-inflammatory medications varies based on the clinical scenario and patient needs. Oral formulations remain the most common route, but topical preparations, intravenous administration, and rectal suppositories provide alternatives when oral administration is contraindicated or suboptimal.7 Dosing strategies range from as-needed administration for acute conditions to scheduled dosing for chronic inflammatory disorders, with the lowest effective dose used for the shortest duration necessary to minimize adverse effects while achieving therapeutic goals.6

Scientific Citation

[1] Vane JR, Botting RM. Anti-inflammatory drugs and their mechanism of action. Inflamm Res. 1998 Oct;47 Suppl 2:S78-87. DOI: 10.1007/s000110050284

[2] Ghlichloo I, Gerriets V. Nonsteroidal Anti-inflammatory Drugs (NSAIDs). StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2023. Available from: https://www.ncbi.nlm.nih.gov/books/NBK547742/

[3] Osafo N, Agyare C, Obiri DD, Antwi AO. Mechanism of Action of Nonsteroidal Anti-Inflammatory Drugs. IntechOpen. 2017 Aug 23. DOI: 10.5772/68090

[4] Ricciotti E, FitzGerald GA. Prostaglandins and inflammation. Arterioscler Thromb Vasc Biol. 2011 May;31(5):986-1000. DOI: 10.1161/ATVBAHA.110.207449

[5] Grosser T, Fries S, FitzGerald GA. Biological basis for the cardiovascular consequences of COX-2 inhibition: therapeutic challenges and opportunities. J Clin Invest. 2006 Jan;116(1):4-15. DOI: 10.1172/JCI27291

[6] Sostres C, Gargallo CJ, Lanas A. Nonsteroidal anti-inflammatory drugs and upper and lower gastrointestinal mucosal damage. Arthritis Res Ther. 2013;15 Suppl 3(Suppl 3):S3. DOI: 10.1186/ar4175

[7] Crofford LJ. Use of NSAIDs in treating patients with arthritis. Arthritis Res Ther. 2013;15 Suppl 3(Suppl 3):S2. DOI: 10.1186/ar4174

[8] Bindu S, Mazumder S, Bandyopadhyay U. Non-steroidal anti-inflammatory drugs (NSAIDs) and organ damage: A current perspective. Biochem Pharmacol. 2020 Oct;180:114147. DOI: 10.1016/j.bcp.2020.114147