PLAQUENIL (hydroxychloroquine sulfate)
PLAQUENIL is indicated for the treatment of Malaria; Rheumatoid Arthritis; Systemic Lupus Erythematosus; Chronic Discoid Lupus Erythematosus.
How PLAQUENIL Works
Hydroxychloroquine is a 4-aminoquinoline antimalarial and antirheumatic
Development Insights
Details
- Status
- Prescription
- First Approved
- 1955-04-18
- Routes
- ORAL
- Dosage Forms
- TABLET
PLAQUENIL Approval History
What PLAQUENIL Treats
4 indicationsPLAQUENIL is approved for 4 conditions since its original approval in 1955. These indications span multiple therapeutic areas including oncology, immunology, and more.
- Malaria
- Rheumatoid Arthritis
- Systemic Lupus Erythematosus
- Chronic Discoid Lupus Erythematosus
PLAQUENIL Competitive Set
ProThree rings of competition based on shared molecular targets and treated indications.
Indication competitors
Same indication, different mechanism — what else might this patient receive?
Filters applied: drops same-active-ingredient (505(b)(2) reformulations), route-mismatch (topical vs systemic), and cross-therapeutic-area matches in same-indication rings.
What's emerging in PLAQUENIL's indications
See all emerging drugs →Phase 3 candidates targeting molecules with no FDA-approved drug, in indications PLAQUENIL treats. First-in-class if their pivotal trials read out positive.
Drugs Similar to PLAQUENIL
3 of 20FDA-approved drugs for similar conditions. Compare mechanisms and indications to understand treatment alternatives.
Clinical Trial Registry
13 trials| Trial | Sponsor ID | Phase | Status | Title |
|---|---|---|---|---|
| NCT04911816 | 2103260669 | Ph 1, Ph 2 | recruiting | Neoadjuvant mFOLFIRINOX With Perioperative Oral Hydroxychloroquine in Resectable Pancreatic Adenocarcinoma |
| NCT02615938 HCQ-chILD-EU results posted | EudratCT:2013-003714-40 | Ph 2 | terminated | Hydroxychloroquine (HCQ) in Pediatric Interstitial Lung Disease (ILD) |
| NCT04386057 results posted | 19-529 | Ph 2 | completed | LY3214996 +/- HCQ in Pancreatic Cancer |
| NCT06519617 | 2024-KY-173 | Ph 2 | enrolling by invitation | Study on Optimization and Evaluation of Integrated Chinese and Western Medicine for pSS Glandular Damage |
| NCT04341727 WU352 results posted | 202003188 | Ph 3 | terminated | Hydroxychloroquine,Hydroxychloroquine,Azithromycin in the Treatment of SARS CoV-2 Infection |
| NCT04336332 results posted | 002011 Pro2020000712, Pro2020000712 | Ph 2 | terminated | Randomized Comparison of Combination Azithromycin and Hydroxychloroquine vs. Hydroxychloroquine Alone for the Treatment of Confirmed COVID-19 |
| NCT04354428 results posted | STUDY00009878 INV-017062 | Ph 2, Ph 3 | terminated | Treatment for COVID-19 in High-Risk Adult Outpatients |
| NCT04328961 results posted | STUDY00009750 INV-016204 | Ph 2, Ph 3 | completed | Hydroxychloroquine for COVID-19 Post-exposure Prophylaxis (PEP) |
| NCT04342221 COV-HCQ | COV-HCQ 2020-001224-33 | Ph 3 | terminated | Hydroxychloroquine for COVID-19 |
| NCT04361461 | APS000/2020 | Ph 3 | withdrawn | Use of Hydroxychloroquine Alone or Associated for Inpatients With SARS-CoV2 Virus (COVID-19) |
| NCT04307693 | S2020-0472-0001 | Ph 2 | terminated | Comparison of Lopinavir/Ritonavir or Hydroxychloroquine in Patients With Mild Coronavirus Disease (COVID-19) |
| NCT02942381 | 2016(1057) | Ph 2 | completed | A Study of Hydroxychloroquine Sulfate for Reduction of Proteinuria in Patients With IgA Nephropathy |
| NCT02351752 | 2014【851】 | Ph 4 | completed | Hydroxychloroquine Sulfate for Reduction of Proteinuria in Patients With IgA Nephropathy: a Self- Controlled Study |
Active Pipeline
Ongoing clinical trials by development phase
Key Completed Trials
Completed studies with published results, ranked by significance
Trial Timeline
Full development history with FDA approval milestones
Understanding FDA Approval Types
| Count | Type | What it means |
|---|---|---|
| - | ORIG | Original approval - drug first enters market |
| - | SUPPL - Efficacy | New indication (new disease/condition approved) |
| - | SUPPL - Labeling | Label text changes (warnings, dosing updates) |
| - | SUPPL - Manufacturing | Production changes (new facility) |
| - | SUPPL - Chemistry | Formulation changes (new dosage strength) |
Green lines in the timeline show ORIG and Efficacy approvals - the clinically meaningful milestones.
PLAQUENIL FDA Label Details
Indications & Usage
FDA Label (PDF)PLAQUENIL is indicated for the treatment of Malaria; Rheumatoid Arthritis; Systemic Lupus Erythematosus; Chronic Discoid Lupus Erythematosus.
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Data Sources
Data sourced from official FDA and NIH databases. Click links to verify on original sources.
How We Calculate These Metrics
Trial Activity Stage
Measures the current development activity pattern based on trial phases, status, and trends. Important: This measures R&D activity, not commercial lifecycle.
Trial statuses: "Active" means recruiting or ongoing. "Completed" means reached planned endpoint. "Terminated" means stopped early—often due to safety, efficacy, or business reasons.
- Growth: High proportion of early-phase trials (Phase 1/2), active development
- Expansion: Significant Phase 3 activity, approaching or pursuing approvals
- Mature: Substantial Phase 4 post-marketing studies
- Stable: Mixed phase distribution, steady development
- Declining: Low active trial ratio, reduced R&D investment