Hydroxychloroquine (hydroxychloroquine sulfate) — Uses, Dosage, Side Effects & Safety

Drug class: Antimalarial, Disease-Modifying Antirheumatic Drug (DMARD)

Overview

Hydroxychloroquine is a medication used to prevent and treat malaria, as well as to manage autoimmune conditions such as rheumatoid arthritis and systemic lupus erythematosus (SLE). It helps reduce inflammation, pain, and swelling in these chronic diseases. Hydroxychloroquine works by interfering with the communication of cells in the immune system, helping to decrease the abnormal immune response that causes inflammation and tissue damage. For malaria, it acts by disrupting the growth of parasites in red blood cells. Key points for patients: Hydroxychloroquine is usually well tolerated but requires regular eye exams and monitoring for side effects. It is important to take it exactly as prescribed and not to stop suddenly without consulting your healthcare provider.

Therapeutic uses

• Malaria treatment and prophylaxis
• Rheumatoid arthritis
• Systemic lupus erythematosus
• Sjögren's syndrome

Common side effects

• Nausea
• Diarrhea
• Stomach cramps
• Rash
• Headache
• Blurred vision
• Retinopathy
• Cardiomyopathy

Frequently Asked Questions about Hydroxychloroquine

What conditions does hydroxychloroquine treat?

Hydroxychloroquine is used to prevent and treat malaria, and to manage autoimmune diseases such as rheumatoid arthritis and systemic lupus erythematosus.

How long does it take for hydroxychloroquine to work for arthritis or lupus?

It may take several weeks to months for the full benefits to be seen in autoimmune conditions. Continue taking as prescribed and consult your doctor if you have concerns.

Is hydroxychloroquine safe during pregnancy?

Hydroxychloroquine may be used during pregnancy if the benefits outweigh the risks, but only under close medical supervision.

Do I need regular eye exams while taking hydroxychloroquine?

Yes, regular eye exams are recommended before starting and periodically during treatment to monitor for retinal toxicity.

Can hydroxychloroquine be used for COVID-19?

Hydroxychloroquine is not recommended for the prevention or treatment of COVID-19 outside of clinical trials, as studies have not shown clear benefit and there are safety concerns.

What should I do if I experience vision changes?

Contact your healthcare provider immediately if you notice any changes in vision, as this may indicate serious side effects.

Can children take hydroxychloroquine?

Hydroxychloroquine can be prescribed to children for certain conditions, but dosing must be carefully calculated and monitored by a pediatric specialist.

Educational information only. Always consult a qualified healthcare professional before starting, stopping, or changing any medication.