Hydroquenin

Hydroxychloroquine sulfate, the active ingredient in Hydroquenin, is an antimalarial (DMARD) presented as an oral tablet for oral use. It is employed to treat malaria and to manage autoimmune conditions such as rheumatoid arthritis and systemic lupus erythematosus in adult patients.

GNH USA supplies Hydroquenin as a licensed, GDP‑compliant international pharmaceutical supplier serving hospitals, pharmacies and clinics worldwide. The company adheres to European Union quality standards and provides batch‑tested product for global distribution. Our supply chain ensures timely delivery and regulatory compliance across multiple markets.

Hydroquenin (hydroxychloroquine sulfate) is used in the management of infectious and autoimmune disease pathways.

- Malaria: reduces parasite replication, aiding cure and prevention. - Rheumatoid arthritis: diminishes joint inflammation and slows disease progression. - Systemic lupus erythematosus: controls systemic inflammation and reduces flare frequency.

Hydroquenin may cause a range of adverse reactions, varying from mild to severe.

Common Side Effects: - Nausea: occasional upset stomach or feeling of sickness. - Diarrhea: loose stools that may occur during treatment. - Headache: mild to moderate head pain reported by some patients. - Skin rash: erythematous or pruritic eruptions on the body.

Serious or Rare Side Effects: - Retinopathy: progressive vision changes that can be irreversible. - Cardiac toxicity: QT interval prolongation or cardiomyopathy leading to arrhythmias. - Severe hypoglycaemia: markedly low blood glucose, especially in diabetic patients on insulin or sulfonylureas.

When prescribing Hydroquenin, clinicians should observe several safety considerations.

- Retinal monitoring: schedule baseline and periodic ophthalmologic examinations. - Cardiac assessment: evaluate QT interval and pre‑existing heart disease. - Blood glucose: monitor for hypoglycaemia, especially in diabetic patients. - Hepatic/renal function: adjust dosing in impaired patients. - Hypersensitivity: discontinue if rash or allergic reaction occurs. - Store at room temperature: keep in original container, protect from moisture and light.

Hydroquenin can affect, or be affected by, several concomitant medicines.

Major Interactions (Avoid): - QT‑prolonging agents (e.g., quinidine, amiodarone): increased risk of cardiac arrhythmia. - Insulin or sulfonylureas: may cause severe hypoglycaemia. - Tamoxifen: heightened risk of retinal toxicity.

Moderate Interactions (Monitor Closely): - Antacids or supplements containing aluminium/magnesium: may reduce hydroxychloroquine absorption. - Digoxin: potential increase in serum digoxin levels. - Cyclosporine: may raise hydroxychloroquine concentrations, requiring monitoring.