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Price of Chlorothiazide
Chlorothiazide sod 500 mg vial
* price without discount in nearest pharmacy. Price may vary.
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Chlorothiazide volume of distribution
What is Chlorothiazide
A thiazide diuretic with actions and uses similar to those of hydrochlorothiazide. (From Martindale, The Extra Pharmacopoeia, 30th ed, p812)
Chlorothiazide mechanism of action
As a diuretic, chlorothiazide inhibits active chloride reabsorption at the early distal tubule via the Na-Cl cotransporter, resulting in an increase in the excretion of sodium, chloride, and water. Thiazides like chlorothiazide also inhibit sodium ion transport across the renal tubular epithelium through binding to the thiazide sensitive sodium-chloride transporter. This results in an increase in potassium excretion via the sodium-potassium exchange mechanism. The antihypertensive mechanism of chlorothiazide is less well understood although it may be mediated through its action on carbonic anhydrases in the smooth muscle or through its action on the large-conductance calcium-activated potassium (KCa) channel, also found in the smooth muscle.
Dosage forms of Chlorothiazide
6-Chloro-1,1-dioxo-1,2-dihydro-1lambda*6*-benzo(1,2,4)thiadiazine-7-sulfonic acid amide
Avera Mc Kennan Hospital
Humans and other mammals
Indication of Chlorothiazide
Chlorothiazide is indicated as adjunctive therapy in edema associated with congestive heart failure, hepatic cirrhosis, and corticosteroid and estrogen therapy. It is also indicated in the management of hypertension either as the sole therapeutic agent or to enhance the effectiveness of other antihypertensive drugs in the more severe forms of hypertension.
Toxicity of Chlorothiazide
Oral, rat LDsub50/sub: 10 g/kg. Signs of overdose include those caused by electrolyte depletion (hypokalemia, hypochloremia, hyponatremia) and dehydration resulting from excessive diuresis. If digitalis has also been administered hypokalemia may accentuate cardiac arrhythmias.
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