A medication used to treat malaria, lupus, and rheumatoid arthritis by inhibiting parasite growth and modulating the immune response, thereby reducing inflammation and improving symptoms.

Indications:
- Suppresses and treats acute malaria caused by Plasmodium vivax, P. malariae, P. ovale, and susceptible strains of P. falciparum.
- Treats chronic discoid and systemic lupus erythematosus.
- Manages acute or chronic rheumatoid arthritis.

Main Active Ingredient:
- Hydroxychloroquine sulfate 200 mg.

Precautions:
- Regular ophthalmologic examinations are required for long-term therapy to monitor for retinal damage.
- Use with caution in patients with liver disease, kidney problems, or G-6-PD deficiency.
- Avoid use during pregnancy unless benefits outweigh risks.
- Keep out of reach of children due to high toxicity risk.

Side Effects:
- Headache, dizziness, nightmares, or irritability.
- Visual disturbances, blurred vision, or retinopathy.
- Nausea, vomiting, diarrhea, or abdominal discomfort.
- Skin reactions such as rash, alopecia, or photosensitivity.
- Rare blood disorders such as anemia or leukopenia.

Drug-Drug Interactions:
- Antacids or drugs affecting stomach pH may reduce absorption.
- Other antimalarial drugs.
- Drugs with potential retinal toxicity.
- Certain antibiotics and cardiovascular medications may interact.