Hydroxychloroquine: study card

Generic name

Hydroxychloroquine

Class

4-aminoquinoline antimalarial / antirheumatic agent

Mechanism

4-aminoquinoline antimalarial; anti-inflammatory and immunomodulatory mechanisms in RA and lupus are not fully known.

Used for

Uncomplicated malaria due to susceptible listed Plasmodium species in adults and children; Malaria prevention only in areas without reported chloroquine resistance; Rheumatoid arthritis in adults; Systemic or chronic discoid lupus erythematosus in adults

Common side effects

Retinopathy; Visual field defects; Vertigo; Tinnitus; Anemia

Warnings

Cardiomyopathy and ventricular arrhythmias; Irreversible retinal toxicity; Serious skin reactions; Not recommended for complicated or chloroquine-resistant malaria; it does not prevent P. vivax or P. ovale relapses from liver-stage parasites

Interactions

QT-prolonging drugs; Other arrhythmogenic drugs

Brand questions use only name pairings verified against the linked product source. Unverified pairings are withheld from these questions; the other study content remains available.

Label date: 20260727 · For learning, not clinical decisions. US label and brand information; always consult the current source.

Source snapshot checked: 2026-10-21. The source document and selected fields were compared. The complete card has not had an independent clinical review.