The Brand Name QST Has Generic Salt :: Quinine 

QST  Is From Company Mcw Hc. Priced :: Rs. 48

QST have Quinine is comes under Sub class #N/A of  Main Class #N/A

Main Medicine Class:: #N/A  Sub Medicine Class :: #N/A 

Indications for Drugs ::

Malaria, Nocturnal leg cramps

Drug Dose ::

Malaria Adult: As dihydrochloride: Initially, 20 mg/kg (max: 1.4 g) given over 4 hr. Start maintenance doses 8 hr after the start of the initial infusion. Maintenance: 10 mg/kg (up to 700 mg) given over 4 hr every 8 hr. Loading dose should not be given if patient has received quinine, quinidine, mefloquine or halofantrine during the previous 24 hr. If parenteral treatment is required for >48 hr, maintenance dose should be reduced to 5-7 mg/kg. Child: ?5 mg/kg/hr by slow IV infusion. Hepatic impairment: Mild to moderate (Child-Pugh class A and B): No dosage adjustment needed. Severe: Reduce maintenance dose to 5-7 mg/kg of quinine salt 8 hrly.

Contraindication ::

Hypersensitivity to quinine or quinidine. Myasthaenia gravis; haemolytic anaemia; quinine-resistant falciparum; patients with tinnitus or optic neuritis; patients who have suffered an attack of blackwater fever. Prolonged QT interval. Pregnancy.

Drug Precautions ::

Lactation. CV diseases; G6PD deficient individuals.

Drug Side Effects ::

Cinchonism characterised by tinnitus, impaired hearing, headache, nausea, vomiting, disturbed vision, vertigo, abdominal pain and diarrhoea; urticaria, pruritus, fever, angioedema, asthma, dyspnoea, haemoglobinuria, thrombocytopenic purpura, hypoglycaemia, renal failure, hypoprothrombinaemia, agranulocytosis, Inj site irritation, pain and necrosis. Potentially Fatal: Sinus arrest, AV block, ventricular fibrillation and sudden death especially with IV use.

Pregnancy category ::

3

Drug Mode of Action ::  

Quinine is a cinchona alkaloid and a 4-methanolquinoline. It rapidly acts on blood schizontocide by interfering w/ lysosomal function or nucleic acid synthesis in the Plasmodia spp. It has no activity against exoerythrocytic forms.

Drug Interactions ::

Reduced renal clearance of amantadine. Reduced clearance w/ cimetidine. Increased anticoagulant effect of warfarin and other anticoagulants. Reduced plasma levels of ciclosporin. Increased plasma levels of digoxin. Increased risk of myopathy and rhabdomyolysis w/ atorvastatin. May enhance hypoglycaemic effects of oral antidiabetics. Potentially Fatal: Increased risk of QT prolongation and torsade de pointes w/ mefloquine, class IA antiarrhythmic agents (e.g. quinidine, procainamide, disopyramide) and class III antiarrhythmic agents (e.g. amiodarone, sotalol, dofetilide) and other drugs known to cause QT prolongation (e.g. halofantrine, pimozide, thioridazine). Potentiates neuromuscular blockade w/ neuromascular blocking agents. Decreased plasma levels w/ rifampicin. Increased serum levels w/ ritonavir. May delay or decrease absorption w/ Al- and/or Mg-containing antacids.