NSAIDs (Non-Steroidal Anti-Inflammatory Drugs)
Cyclooxygenase inhibitors · Oral / topical · First-line for OA, back pain, gout flare, AS
How they work
Inhibit cyclooxygenase (COX-1 constitutive, COX-2 inducible) enzymes, blocking prostaglandin synthesis. Prostaglandins mediate pain, inflammation, and fever. Non-selective NSAIDs (ibuprofen, naproxen, diclofenac) inhibit both COX-1 and COX-2. Selective COX-2 inhibitors (celecoxib, etoricoxib) preferentially block COX-2.
Typical dosing
Ibuprofen 400-800 mg TDS · Naproxen 250-500 mg BD · Diclofenac 50 mg TDS or 75 mg BD SR · Celecoxib 200 mg OD or 100 mg BD · Etoricoxib 60-120 mg OD. Topical diclofenac gel 4×/day for localised OA (knee, hand).
Effect on pain
Reduces pain 30-40% in OA within 1-2 weeks. Rapid relief in gout flares (colchicine + NSAID standard). Effective for AS inflammatory back pain and RA flare bridging.
Common side effects
GI (dyspepsia 15-20%, ulcer/bleed 1-2% per year — higher with age, H. pylori, aspirin, steroids), renal (acute kidney injury, sodium retention, hypertension worsening), cardiovascular (2-4% excess MI risk on high-dose diclofenac and rofecoxib-class), fluid retention.
Contraindications
Active peptic ulcer, uncontrolled hypertension, heart failure, eGFR <30, allergy to NSAIDs, third-trimester pregnancy, aspirin-sensitive asthma (Samter's triad). Relative: on anticoagulation, elderly with cardiovascular disease.
Typical cost (India)
₹15-100/month generic · Celecoxib ₹150-400/month · Etoricoxib ₹200-500/month · Topical diclofenac ₹80-200 per tube
when
Short courses (2-4 weeks) for OA flares, gout flares, AS symptoms, RA bridging. Topical NSAID first-line for knee/hand OA (equal efficacy, far less GI/CV risk).
The workhorse class · used more than any other in arthritis
NSAIDs are the most commonly used arthritis medications globally — likely the most commonly used prescription medications of any class. Aspirin was the first NSAID (isolated from willow bark 1897, Bayer patent 1899); phenylbutazone in the 1950s was the first non-aspirin NSAID; ibuprofen (Boots UK, 1961) opened the modern era; diclofenac (Ciba-Geigy, 1974) became a global standard; the selective COX-2 inhibitors celecoxib (1998) and rofecoxib (1999) promised safer alternatives — until VIGOR (2000) [1] and APPROVe (2004) [2] showed rofecoxib caused excess cardiovascular events, leading to its 2004 withdrawal. That controversy transformed how the entire class is prescribed.
Mechanism · why COX-2 selectivity matters
Cyclooxygenase-1 (COX-1) is constitutively expressed in gastric mucosa, platelets, kidney, and endothelium — it produces prostaglandins that protect the stomach lining, activate platelets (thromboxane A2), maintain renal perfusion, and support endothelial homeostasis. COX-2 is inducible — expressed at sites of inflammation, producing pain- and inflammation-mediating prostaglandins. The therapeutic goal is COX-2 inhibition; the toxicity comes from COX-1 inhibition. Non-selective NSAIDs (ibuprofen, naproxen, diclofenac) inhibit both, hence GI ulceration and bleeding. Selective COX-2 inhibitors spare COX-1, reducing GI risk 50-60%, but shift the thromboxane/prostacyclin balance toward pro-thrombotic — the mechanism behind the CV signal.
PRECISION trial · the definitive CV safety comparison
The PRECISION trial [3] (24,081 patients, 3 years, published 2016) directly compared celecoxib vs naproxen vs ibuprofen in OA and RA patients with elevated CV risk. Celecoxib was NOT inferior for CV safety compared to naproxen or ibuprofen — celecoxib actually had marginally lower CV events (2.3% vs 2.5% naproxen vs 2.7% ibuprofen). Celecoxib also had significantly fewer GI events and fewer renal events. This trial substantially rehabilitated celecoxib's reputation. Naproxen retains the reputation for lowest CV risk based on meta-analyses [4], but is more GI-toxic than celecoxib. Diclofenac has the highest CV risk in the class and should generally be avoided in patients with established cardiovascular disease [5].
Topical NSAIDs · often the smartest first choice
Topical diclofenac gel (Voltaren gel, generic) delivers therapeutic drug concentrations to superficial joints (knees, hands, elbows) with 5-15% of systemic absorption — meaning 5-15% of the GI/CV/renal risk of oral NSAIDs, with equivalent efficacy for symptom control in knee and hand OA per Cochrane reviews [6]. Topical NSAIDs are now first-line in ACR 2019 [7] and OARSI 2019 guidelines for hand and knee OA. Grossly underused in India — most patients still get oral diclofenac SR when topical would work as well with far less risk. Ideal for elderly patients, those on aspirin/anticoagulants, or with any CV/GI/renal comorbidity.
GI protection · when co-prescribe a PPI
Any patient on chronic oral NSAID with any risk factor for GI bleeding should receive proton pump inhibitor (PPI) co-therapy — omeprazole 20 mg or pantoprazole 40 mg once daily. Risk factors include: age >65, history of ulcer or GI bleeding, concurrent low-dose aspirin, corticosteroids, anticoagulation, or H. pylori infection. PPIs reduce NSAID-induced ulcer risk by ~70%. H. pylori should be tested for and eradicated before long-term NSAID use in high-risk patients.
Practical prescribing rules
1. Shortest course, lowest effective dose. NSAIDs for arthritis are used for flares (7-14 days) rather than continuously. 2. Prefer topical for superficial joints whenever practical. 3. Naproxen if CV risk elevated (has CV safety profile). 4. Celecoxib if GI risk elevated and CV risk manageable. 5. Add a PPI for chronic use in anyone with risk factors. 6. Check BP and renal function at initiation and periodically — NSAIDs raise BP 3-5 mmHg and can precipitate AKI. 7. Avoid combinations — never combine two NSAIDs, and use caution with aspirin (ibuprofen taken before aspirin blocks aspirin's antiplatelet effect). 8. Never use in third-trimester pregnancy (premature closure of ductus arteriosus, oligohydramnios).
Bottom line: NSAIDs remain first-line for symptomatic management of most arthritis. Topical first for superficial joints. Naproxen or celecoxib preferred for extended use. Always short course when possible. Always with a PPI in high-risk patients. Always with monitored BP and renal function.
📚 References
- Bombardier C, Laine L, Reicin A, et al. Comparison of upper GI toxicity of rofecoxib and naproxen in patients with RA (VIGOR). NEJM. 2000;343(21):1520-1528.
- Bresalier RS, Sandler RS, Quan H, et al. Cardiovascular events associated with rofecoxib in a colorectal adenoma chemoprevention trial (APPROVe). NEJM. 2005;352(11):1092-1102.
- Nissen SE, Yeomans ND, Solomon DH, et al. Cardiovascular safety of celecoxib, naproxen, or ibuprofen for arthritis (PRECISION). NEJM. 2016;375(26):2519-2529.
- Trelle S, Reichenbach S, Wandel S, et al. Cardiovascular safety of non-steroidal anti-inflammatory drugs: network meta-analysis. BMJ. 2011;342:c7086.
- Bhala N, Emberson J, Merhi A, et al. Vascular and upper GI effects of NSAIDs: meta-analyses of individual participant data (CNT collaboration). Lancet. 2013;382(9894):769-779.
- Derry S, Conaghan P, Da Silva JAP, et al. Topical NSAIDs for chronic musculoskeletal pain in adults. Cochrane Database Syst Rev. 2016;4:CD007400.
- Kolasinski SL, Neogi T, Hochberg MC, et al. 2019 ACR/AF Guideline for the Management of Osteoarthritis of the Hand, Hip, and Knee. Arthritis Rheumatol. 2020;72(2):220-233.
- Fraenkel L, Bathon JM, England BR, et al. 2021 ACR Guideline for the Treatment of Rheumatoid Arthritis. Arthritis Rheumatol. 2021;73(7):1108-1123.
- FitzGerald JD, Dalbeth N, Mikuls T, et al. 2020 ACR Guideline for the Management of Gout. Arthritis Care Res. 2020;72(6):744-760.
- Van Der Heijde D, Ramiro S, Landewé R, et al. 2016 update of the ASAS-EULAR management recommendations for axial spondyloarthritis. Ann Rheum Dis. 2017;76(6):978-991.
- American College of Cardiology / American Heart Association Task Force. NSAID use and cardiovascular risk. J Am Coll Cardiol. 2020.
- Solomon DH, Rassen JA, Glynn RJ, et al. The comparative safety of analgesics in older adults with arthritis. Arch Intern Med. 2010;170(22):1968-1976.
Methotrexate & Conventional Synthetic DMARDs
Disease-modifying antirheumatic drugs · Oral / SC · First-line for RA, PsA, JIA
How they work
Methotrexate: antifolate that inhibits dihydrofolate reductase → reduced purine/pyrimidine synthesis → suppression of activated T-cells, B-cells and pro-inflammatory cytokines. Sulfasalazine: converted to 5-ASA (anti-inflammatory) + sulfapyridine (immunomodulatory). Hydroxychloroquine: alters lysosomal pH, suppresses TLR signalling. Leflunomide: pyrimidine synthesis inhibitor.
Typical dosing
Methotrexate 7.5-25 mg once weekly (oral or SC) + folic acid 5 mg daily except MTX day · Sulfasalazine 500 mg BD → 1000 mg BD → 1500 mg BD · Hydroxychloroquine 5 mg/kg/day (usual 200-400 mg daily) · Leflunomide 20 mg daily.
Effect on disease
Methotrexate produces ACR50 response in 30-45% of early RA patients as monotherapy; combined with a biologic in 70-80%. Slows radiographic progression. Achieves clinical remission in 30-40% of early RA at 2 years (TEAR, ).
Common side effects
Methotrexate: nausea (10%), oral ulcers, hair thinning, transaminitis, cytopenias, teratogenic (women must contracept, men too), rare pneumonitis. Sulfasalazine: GI, rash, cytopenias, orange body fluids. Hydroxychloroquine: retinal toxicity (rare with modern dosing but annual eye exam mandatory after 5 years). Leflunomide: diarrhoea, hepatotoxicity, hypertension, teratogenic.
Contraindications
Methotrexate: pregnancy (absolute), significant liver disease, alcohol excess, eGFR <30, active infection, bone marrow disease. Hydroxychloroquine: prior maculopathy. All require baseline and ongoing monitoring.
Typical cost (India)
Methotrexate ₹100-400/month (oral generic) · SC MTX pens ₹1,500-4,000/month · Sulfasalazine ₹250-600/month · Hydroxychloroquine ₹150-400/month · Leflunomide ₹300-800/month
when
Methotrexate is anchor DMARD for RA, PsA, JIA. Triple therapy (MTX + SSZ + HCQ) an option before biologics. HCQ monotherapy for mild inflammatory arthritis, SLE.
The class that transformed rheumatoid arthritis
Before methotrexate became standard RA therapy in the mid-1980s, rheumatoid arthritis was a progressively crippling disease — most patients had significant joint deformity within a decade, half were disabled by 20 years, and mortality was 5-10 years shorter than the general population. The introduction of methotrexate as first-line therapy, the treat-to-target strategy from the early 2000s, and biologics from 1998 onward have collectively transformed RA into a condition where 40-60% of newly diagnosed patients achieve clinical remission with optimal early treatment [1,2]. Methotrexate remains the foundational drug — the ACR 2021 guidelines [3] and EULAR 2022 recommendations [4] both recommend methotrexate initiation immediately at RA diagnosis, alone or in combination, with escalation to biologics only after adequate methotrexate trial.
Methotrexate · why 40 years old and still first-line
Methotrexate was developed in the 1940s by Sidney Farber for childhood leukemia. Its use in RA was pioneered by Michael Weinblatt at Brigham and Women's in 1985 with a landmark placebo-controlled trial [5]. Weekly low-dose methotrexate (7.5-25 mg once weekly, oral or SC) is fundamentally different from the daily high-dose regimen used in oncology — anti-inflammatory rather than cytotoxic. At weekly doses, MTX suppresses activated T-cells and pro-inflammatory cytokines (TNF-α, IL-1, IL-6) via increased extracellular adenosine and inhibition of purine/pyrimidine metabolism. Folic acid 5 mg daily (except methotrexate day) reduces GI toxicity, mucositis, and hepatotoxicity without impairing efficacy [6].
SC methotrexate · bioavailability matters
Oral methotrexate has variable bioavailability (33-90%) that plateaus around 15 mg weekly. Above 15 mg oral doses, additional drug is not efficiently absorbed. Switching to subcutaneous methotrexate (Metoject, Rasuvo pens) provides consistent bioavailability and often produces better disease control at the same or lower dose — with less GI intolerance. The CONCERTO study demonstrated better ACR response rates with SC vs oral MTX at the same 15 mg weekly dose. In India, SC methotrexate pens cost ₹1,500-4,000/month (vs ₹100-400 for oral) — but for patients with inadequate response or oral intolerance, the switch is often transformative.
Triple therapy · a genuine biologic alternative
The RACAT trial [7] (2013, NEJM) randomised RA patients with inadequate methotrexate response to either triple conventional DMARD therapy (MTX + sulfasalazine + hydroxychloroquine) or MTX + adalimumab (a biologic). Non-inferiority was demonstrated for triple therapy — with dramatically lower cost (~₹800/month vs ₹15,000-40,000/month for biologic). The TEAR trial [8] had shown similar results. This makes triple conventional DMARD therapy a legitimate cost-effective option before biologic escalation, particularly relevant in Indian practice where affordability drives adherence. The strategy: methotrexate 15-25 mg weekly + sulfasalazine 1000 mg BD + hydroxychloroquine 5 mg/kg daily. Response typically evaluated at 3-6 months.
Monitoring · the discipline that makes DMARDs safe
Methotrexate requires baseline: CBC, LFT, creatinine, chest X-ray (to rule out interstitial lung disease), hepatitis B/C screen, tuberculosis screen (Mantoux or IGRA). Ongoing: CBC + LFT + creatinine every 4-8 weeks initially, then every 3 months once stable. Hold or reduce dose for transaminitis >3× ULN, WBC <3.0, platelets <100,000, or any new infection. Hydroxychloroquine requires baseline retinal exam and annual eye exam after 5 years (or earlier if risk factors present). Sulfasalazine requires CBC monitoring every 2-4 weeks for 3 months then quarterly. Leflunomide requires CBC + LFT + BP monitoring. Skipping monitoring is the #1 cause of DMARD complications — HopeQure's rheumatology programme includes structured monitoring reminders with NABL home lab draw.
Hydroxychloroquine · the underappreciated adjunct
Hydroxychloroquine (Plaquenil, generic) has anti-inflammatory, mild immunomodulatory, and lipid/glucose-modulating effects. It is first-line for mild RA, SLE, primary Sjögren's, and often added to methotrexate for additional efficacy at low cost and low toxicity. Cardiovascular mortality benefit observed in RA cohort studies [9]. QT prolongation risk (mostly concerning at doses higher than rheumatologic doses). Modern dosing (≤5 mg/kg/day of actual body weight) with baseline and annual (after 5 years) ophthalmology exam essentially eliminates the historical retinopathy concern. Safe in pregnancy.
Bottom line: Conventional synthetic DMARDs — methotrexate as anchor, with sulfasalazine and hydroxychloroquine as combination partners — remain the foundation of modern rheumatoid arthritis and psoriatic arthritis treatment. Cheap, effective, well-monitored, and complementary to virtually every biologic. Triple therapy is a legitimate cost-effective strategy where biologics are unaffordable. Rigorous monitoring is what makes this class safe.
📚 References
- Grigor C, Capell H, Stirling A, et al. Effect of a treatment strategy of tight control for rheumatoid arthritis (TICORA). Lancet. 2004;364(9430):263-269.
- Klarenbeek NB, Güler-Yüksel M, van der Kooij SM, et al. The impact of four dynamic, goal-steered treatment strategies on the 5-year outcomes of rheumatoid arthritis patients in the study. Ann Rheum Dis. 2011;70(6):1039-1046.
- Fraenkel L, Bathon JM, England BR, et al. 2021 ACR Guideline for the Treatment of Rheumatoid Arthritis. Arthritis Rheumatol. 2021;73(7):1108-1123.
- Smolen JS, Landewé RBM, Bergstra SA, et al. EULAR recommendations for the management of RA with synthetic and biological DMARDs: 2022 update. Ann Rheum Dis. 2023;82(1):3-18.
- Weinblatt ME, Coblyn JS, Fox DA, et al. Efficacy of low-dose methotrexate in rheumatoid arthritis. NEJM. 1985;312(13):818-822.
- Shea B, Swinden MV, Tanjong Ghogomu E, et al. Folic acid and folinic acid for reducing side effects in patients receiving methotrexate for RA. Cochrane Database Syst Rev. 2013;5:CD000951.
- O'Dell JR, Mikuls TR, Taylor TH, et al. Therapies for active rheumatoid arthritis after methotrexate failure (RACAT). NEJM. 2013;369(4):307-318.
- Moreland LW, O'Dell JR, Paulus HE, et al. A randomized comparative effectiveness study of oral triple therapy versus etanercept plus methotrexate (TEAR). Arthritis Rheum. 2012;64(9):2824-2835.
- Rempenault C, Combe B, Barnetche T, et al. Metabolic and cardiovascular benefits of hydroxychloroquine in patients with rheumatoid arthritis. Ann Rheum Dis. 2018;77(1):98-103.
- Visser K, Katchamart W, Loza E, et al. Multinational evidence-based recommendations for the use of methotrexate in rheumatic disorders. Ann Rheum Dis. 2009;68(7):1086-1093.
- Braun J, Rau R. An update on methotrexate. Curr Opin Rheumatol. 2009;21(3):216-223.
- Kavanaugh A, Chen T, Ho A, et al. Comparison of subcutaneous and oral methotrexate in RA (CONCERTO analysis). Ann Rheum Dis. 2020.
Biologic DMARDs & JAK Inhibitors
Targeted immunomodulators · SC / IV / oral (JAK) · When conventional DMARDs inadequate
How they work
TNF inhibitors (adalimumab, etanercept, infliximab, golimumab, certolizumab): neutralise TNF-α. IL-6 receptor inhibitors (tocilizumab, sarilumab): block IL-6 signalling. B-cell depletion (rituximab): deplete CD20+ B-cells. T-cell co-stimulation blocker (abatacept). IL-17 inhibitors (secukinumab, ixekizumab): AS, PsA. IL-23 inhibitors (guselkumab, risankizumab): PsA, psoriasis. JAK inhibitors (tofacitinib, baricitinib, upadacitinib): oral, block cytokine signalling.
Typical dosing
Adalimumab 40 mg SC every 2 weeks · Etanercept 50 mg SC weekly · Infliximab 3-5 mg/kg IV every 8 weeks · Tocilizumab 162 mg SC weekly · Rituximab 1000 mg IV × 2 doses 2 weeks apart, repeat every 6 months · Tofacitinib 5 mg BD · Upadacitinib 15 mg OD.
Effect on disease
ACR50 response 40-60% in RA patients with inadequate response to MTX. Radiographic progression halted in majority. Remission achieved in 30-50%. Faster onset than conventional DMARDs (2-8 weeks vs 12+ weeks).
Common side effects
Infections (~2× baseline risk, including reactivation of latent TB, hepatitis B), injection site reactions, infusion reactions (IV agents), rare demyelination (TNF), rare drug-induced lupus. JAK inhibitors: higher VTE and MACE risk in patients >50 with CV risk factors (ORAL Surveillance).
Contraindications
Active infection, latent TB not yet treated, active hepatitis B, class III-IV heart failure (TNF), demyelinating disease (TNF), pregnancy (varies by agent — certolizumab and etanercept safest). JAK inhibitors: caution in age >65 with CV risk, prior VTE, active malignancy.
Typical cost (India)
TNF biosimilars (adalimumab, etanercept) ₹8,000-15,000/month · Originator biologics ₹15,000-40,000/month · Rituximab ₹40,000-60,000 per infusion cycle · JAK inhibitors ₹4,000-15,000/month · Access schemes and biosimilars have dramatically improved affordability.
when
Inadequate response to methotrexate or triple therapy · TNF first-line biologic for RA/PsA/AS · IL-17 preferred for AS and PsA (skin) · IL-6 for RA with elevated systemic inflammation · Rituximab for RF/anti-CCP positive RA and RA + vasculitis.
The biologic revolution · a brief history
Etanercept (Enbrel, Immunex/Amgen) was approved by the FDA in November 1998 as the first biologic DMARD — a soluble TNF-α receptor fusion protein. Infliximab (Remicade, Centocor) followed in 1999 as the first monoclonal antibody biologic. Adalimumab (Humira, Abbott) in 2002 as the first fully human anti-TNF. These agents transformed rheumatoid arthritis, psoriatic arthritis, ankylosing spondylitis, and juvenile idiopathic arthritis prognoses within a decade. The 2010s brought biologics with different mechanisms (IL-6: tocilizumab; B-cell: rituximab; T-cell co-stim: abatacept; IL-17: secukinumab; IL-23: guselkumab). The late 2010s brought JAK inhibitors (tofacitinib 2012, baricitinib 2018, upadacitinib 2019) — oral small molecules with efficacy comparable to biologics. India's access has been transformed by biosimilars — adalimumab biosimilars available at 40-60% of originator cost, expanding access dramatically.
TNF inhibitors · the anchor biologic class
TNF-α is a central pro-inflammatory cytokine in RA and other inflammatory arthritides. Five TNF inhibitors are marketed globally: etanercept (soluble receptor, weekly SC), infliximab (chimeric mAb, IV every 8 weeks), adalimumab (fully human mAb, biweekly SC), golimumab (fully human mAb, monthly SC), and certolizumab (PEGylated Fab fragment, biweekly SC — preferred in pregnancy due to minimal placental transfer). ACR50 response rates in MTX-inadequate RA are 40-55% at 6 months; combined with MTX these rise to 50-65%. Class effect but not identical — patients who fail one TNF may respond to another; ~30-40% switch success rate. TB screening mandatory before initiation (chest X-ray + Mantoux or IGRA); treat latent TB before starting.
Beyond TNF · matching mechanism to phenotype
IL-6 receptor inhibitors (tocilizumab, sarilumab) are highly effective in RA, particularly with elevated CRP or systemic features. Tocilizumab is the only biologic with monotherapy efficacy comparable to combination with MTX (ADACTA trial). B-cell depletion with rituximab is preferred for seropositive RA (RF+ or anti-CCP+), RA with vasculitis, and rheumatoid arthritis with lung involvement. Effective for 6-12 months per cycle. Abatacept (CTLA-4-Ig) blocks T-cell co-stimulation, favoured for elderly RA patients or those with higher infection risk (lower infection rate than TNF). IL-17 inhibitors (secukinumab, ixekizumab) are outstanding for ankylosing spondylitis and psoriatic arthritis (especially with skin involvement). IL-23 inhibitors (guselkumab, risankizumab) are transformative for PsA and psoriasis.
JAK inhibitors · convenience and warnings
Tofacitinib, baricitinib, and upadacitinib are oral small-molecule inhibitors of Janus kinase signalling (JAK1-3 selectively depending on agent). Efficacy in RA is comparable to biologics — ACR50 40-55% at 6 months. Oral dosing is a major advantage over injectable biologics. But the ORAL Surveillance trial published in 2022 [1] showed increased MACE (major adverse cardiovascular events) and malignancy (particularly lung cancer, lymphoma) with tofacitinib versus TNF inhibitors in patients >50 with at least one cardiovascular risk factor. FDA and EMA subsequently issued boxed warnings for the entire JAK inhibitor class. Practical implication: reserve JAK inhibitors for patients who have failed at least one TNF inhibitor, and use with particular caution in patients >65, with CV risk factors, prior VTE, current or past malignancy, or heavy smokers.
Safety monitoring · what to screen for and how often
Before starting any biologic: latent TB screen (Mantoux or IGRA — preferred), hepatitis B and C, HIV in high-risk, chest X-ray, immunisation status update (avoid live vaccines during and 3 months around biologic use), baseline CBC + LFT + creatinine. On treatment: monitor for infections (aggressive treatment of infections; hold biologic during serious infection), CBC quarterly (some agents cause cytopenias), LFT quarterly, screen for skin cancers annually. Latent TB: treat with isoniazid or rifampin for 4-9 months before starting biologic. Live vaccines (MMR, varicella, live typhoid, yellow fever) contraindicated during biologic use — plan travel and vaccinations before initiation.
Biosimilars · India's access story
India was the first country to approve a biosimilar adalimumab (Zydus, 2014). Multiple biosimilars are now available for adalimumab, etanercept, infliximab, and rituximab at 40-70% of originator cost. Regulatory equivalence has been established for these products — comparable efficacy, safety, and immunogenicity. HopeQure rheumatologists prescribe biosimilars as standard practice unless specific reasons dictate originator. The cost saving often makes long-term biologic therapy sustainable — a critical factor because RA typically requires biologic therapy for years or lifelong.
Bottom line: Biologic DMARDs and JAK inhibitors have transformed inflammatory arthritis — remission is now achievable, structural progression prevented, and long-term disability dramatically reduced. TNF inhibitors remain first-line biologic. Choice of subsequent biologic tailored to phenotype (seropositivity, extra-articular involvement, comorbidities). Rigorous infection screening and immunisation before initiation. Biosimilars make biologic therapy accessible in India. Requires rheumatology-led management.
📚 References
- Ytterberg SR, Bhatt DL, Mikuls TR, et al. Cardiovascular and cancer risk with tofacitinib in RA (ORAL Surveillance). NEJM. 2022;386(4):316-326.
- Fraenkel L, Bathon JM, England BR, et al. 2021 ACR Guideline for the Treatment of Rheumatoid Arthritis. Arthritis Rheumatol. 2021;73(7):1108-1123.
- Smolen JS, Landewé RBM, Bergstra SA, et al. EULAR recommendations for the management of RA: 2022 update. Ann Rheum Dis. 2023;82(1):3-18.
- Weinblatt ME, Keystone EC, Furst DE, et al. Adalimumab, a fully human anti-TNF monoclonal antibody, for the treatment of RA in patients taking concomitant MTX: the ARMADA trial. Arthritis Rheum. 2003;48(1):35-45.
- Klareskog L, van der Heijde D, de Jager JP, et al. Therapeutic effect of the combination of etanercept and methotrexate compared with each treatment alone in patients with RA (TEMPO). Lancet. 2004;363(9410):675-681.
- St Clair EW, van der Heijde DM, Smolen JS, et al. Combination of infliximab and methotrexate therapy for early RA (ASPIRE). Arthritis Rheum. 2004;50(11):3432-3443.
- Emery P, Fleischmann RM, van der Heijde D, et al. The effects of golimumab on radiographic progression in RA (GO-FORWARD). Arthritis Rheum. 2011;63(5):1200-1210.
- Gabay C, Emery P, van Vollenhoven R, et al. Tocilizumab monotherapy versus adalimumab monotherapy for the treatment of RA (ADACTA). Lancet. 2013;381(9877):1541-1550.
- Cohen SB, Emery P, Greenwald MW, et al. Rituximab for RA refractory to anti-TNF therapy (REFLEX). Arthritis Rheum. 2006;54(9):2793-2806.
- Baeten D, Sieper J, Braun J, et al. Secukinumab, an interleukin-17A inhibitor, in ankylosing spondylitis (MEASURE 1 & 2). NEJM. 2015;373(26):2534-2548.
- Fleischmann R, Kremer J, Cush J, et al. Placebo-controlled trial of tofacitinib monotherapy in RA (ORAL Solo). NEJM. 2012;367(6):495-507.
- Genovese MC, Kremer J, Zamani O, et al. Baricitinib in RA patients with inadequate response to biologic DMARDs. NEJM. 2016;374(13):1243-1252.
- Fleischmann R, Pangan AL, Song IH, et al. Upadacitinib versus placebo or adalimumab in RA (SELECT-COMPARE). Arthritis Rheumatol. 2019;71(11):1788-1800.
- Emery P, Vencovský J, Sylwestrzak A, et al. A phase III randomised, double-blind, parallel-group study comparing SB4 with etanercept reference product in RA. Ann Rheum Dis. 2017;76(1):51-57.
Uric-Acid Lowering Therapy (ULT) — Allopurinol, Febuxostat
Xanthine oxidase inhibitors · Oral · First-line for chronic gout management
How they work
Block xanthine oxidase → reduced conversion of hypoxanthine/xanthine to uric acid → lower serum uric acid → dissolution of MSU crystals over time → prevention of gout flares.
Typical dosing
Allopurinol: start 100 mg OD (50 mg if CKD), titrate every 2-4 weeks to target uric acid <6 mg/dL (usually 300-600 mg daily, occasionally up to 900) · Febuxostat 40-80 mg OD.
Effect
Uric acid <6 mg/dL reduces flare frequency to near zero over 6-12 months as crystal load resolves. Tophi shrink and disappear over years. Prevents chronic tophaceous gout, uric acid nephropathy.
Common side effects
Allopurinol: rare severe cutaneous reactions (SJS, TEN, DRESS) — screen HLA-B*5801 in Han Chinese, Thai, Korean. GI, LFT rise, initial flare paradox on starting. Febuxostat: CV events (small excess vs allopurinol per CARES) — avoid in ASCVD.
Typical cost (India)
Allopurinol ₹50-200/month · Febuxostat ₹200-500/month · Colchicine 0.5 mg BD prophylaxis first 6 months ₹150-400/month
Practical
Do not start during acute flare. Give colchicine 0.5 mg BD or low-dose NSAID prophylaxis first 6 months to prevent mobilisation flares. Target uric acid <6 mg/dL (<5 for tophaceous). Lifelong therapy — stopping causes flare recurrence.
Intra-Articular Corticosteroid Injection
Local anti-inflammatory · Procedure · OA flares, RA active joint, gout, tenosynovitis
How it works
Direct joint or peri-articular injection of triamcinolone, methylprednisolone, or betamethasone → potent local anti-inflammatory effect for weeks-months.
Typical dosing
Triamcinolone 40 mg for large joints (knee), 20 mg medium (ankle, wrist), 10 mg small (fingers, toes). Maximum 3-4 injections per joint per year to protect cartilage.
Effect
Rapid symptom relief within 24-72 hours. Duration 4-12 weeks typically. Useful as bridge for OA awaiting joint replacement, RA active joint flare, gout tophi.
Common side effects
Post-injection flare (10-15%, self-limiting), skin atrophy/depigmentation at site (with superficial injection), rare infection (<1/10,000), transient glucose rise, chronic cartilage effects with frequent repeated injections.
when
Localised joint flare not responding to systemic therapy. Bridging therapy while awaiting definitive treatment. Ultrasound guidance improves precision and outcomes.
Duloxetine, Amitriptyline, Pregabalin (Fibromyalgia & Chronic Pain)
Neuromodulators · Oral · Fibromyalgia, chronic OA pain, neuropathic pain
How they work
Duloxetine (SNRI): inhibits serotonin + noradrenaline reuptake → central pain modulation. Amitriptyline (TCA): multiple mechanisms including sodium channel block and monoamine effects. Pregabalin/gabapentin: bind α2δ subunit of voltage-gated calcium channels.
Typical dosing
Duloxetine 30-60 mg OD (start 30) · Amitriptyline 10-25 mg at night · Pregabalin 75 mg BD → 150 mg BD (up to 300 mg BD) · Gabapentin 300-900 mg TDS.
Effect
Duloxetine has FDA approval for fibromyalgia and chronic OA pain — 30-40% response rate. Pregabalin FDA-approved for fibromyalgia. Amitriptyline evidence-based first-line at low dose for fibromyalgia and chronic pain.
Common side effects
Duloxetine: nausea, dry mouth, sweating, sexual dysfunction. Amitriptyline: sedation (useful at bedtime), dry mouth, constipation, weight gain. Pregabalin: sedation, dizziness, weight gain, dependence potential.
when
Fibromyalgia (all three are options), chronic OA pain refractory to NSAIDs (duloxetine), diabetic peripheral neuropathy (all), sleep-disturbed chronic pain (amitriptyline at bedtime).