Hydroxychloroquine Sulfate Blackrock Pharmaceuticals

Hydroxychloroquine sulfate, the active ingredient in Hydroxychloroquine Sulfate Blackrock Pharmaceuticals, is a quinoline antimalarial presented as an oral tablet for oral use. It treats malaria and modulates immune response in rheumatoid arthritis and systemic lupus erythematosus.

GNH USA supplies Hydroxychloroquine Sulfate Blackrock Pharmaceuticals as a licensed, GDP‑compliant international pharmaceutical supplier serving hospitals, pharmacies and clinics worldwide.

Hydroxychloroquine sulfate is employed in diseases where it interferes with parasite metabolism or modulates immune activity.

- Malaria: clears Plasmodium infection and prevents recurrence. - Rheumatoid arthritis: reduces joint inflammation and slows disease progression. - Systemic lupus erythematosus: diminishes disease activity and organ damage risk.

Hydroxychloroquine may cause a range of adverse reactions, from mild to serious.

Common Side Effects: - Nausea: mild gastrointestinal upset. - Headache: transient cranial discomfort. - Diarrhea: loose stools, usually self‑limiting. - Skin rash: mild erythema or pruritus. - Visual disturbances: blurred vision or photophobia.

Serious or Rare Side Effects: - Retinopathy: progressive vision loss requiring ophthalmologic monitoring. - Cardiomyopathy: heart rhythm abnormalities or reduced cardiac function. - Severe hypoglycemia: especially when combined with antidiabetic agents. - Hemolysis in G6PD deficiency: rapid red blood cell destruction. - Stevens‑Johnson syndrome: severe skin and mucosal reactions.

Hydroxychloroquine requires careful monitoring to minimize risks.

- Pregnancy: Category C – weigh potential benefits against fetal risks. - Retinal monitoring: baseline and periodic eye exams are advised. - Cardiac assessment: ECG monitoring for QT prolongation in at‑risk patients. - G6PD deficiency: test before initiating therapy to avoid hemolysis. - Blood glucose: monitor closely if patient uses insulin or oral hypoglycemics. - Store at ambient temperature: keep below 25°C in original packaging, protect from moisture and direct sunlight.

Hydroxychloroquine can interact with several drug classes, affecting safety and efficacy.

Major Interactions (Avoid): - QT‑prolonging agents (e.g., azithromycin, quinidine): increase risk of cardiac arrhythmias. - Digoxin: hydroxychloroquine may raise digoxin serum levels, leading to toxicity. - Insulin or sulfonylureas: enhanced hypoglycemic effect.

Moderate Interactions (Monitor Closely): - CYP3A4 inhibitors (e.g., ketoconazole): may increase hydroxychloroquine concentrations. - CYP3A4 inducers (e.g., rifampin): may reduce drug exposure. - NSAIDs: may exacerbate gastrointestinal irritation.