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Brand names,
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Analogs
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Brand Names Mixture
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Chemical_Formula
C4H6N2S
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RX_link
http://www.rxlist.com/cgi/generic3/methim.htm
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fda sheet
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msds (material safety sheet)
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Synthesis Reference
No information avaliable
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Molecular Weight
114.17 g/mol
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Melting Point
146 oC
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H2O Solubility
275 g/L
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State
Solid
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LogP
-0.34
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Dosage Forms
Tablet (5 or 10 mg)
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Indication
For the treatment of hyperthyroidism, goiter, Graves disease and psoriasis.
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Pharmacology
Used in the treatment of hyperthyroidism or an overactive thyroid gland, methimazole inhibits the synthesis of thyroid hormones and thus is effective in the treatment of hyperthyroidism. It may also be used to ameliorate hyperthyroidism in preparation for subtotal thyroidectomy or radioactive iodine therapy.
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Absorption
Rapid with an oral bioavailability of 93%.
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side effects and Toxicity
Oral LD50 in rats is 2250 mg/kg. Symptoms of overdose include nausea, vomiting, epigastric distress, headache, fever, joint pain, pruritus, and edema. Aplastic anemia (pancy-topenia) or agranulocytosis may be manifested in hours to days. Less frequent events are hepatitis, nephrotic syndrome, exfoliative dermatitis, neuropathies, and CNS stimulation or depression.
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Patient Information
Patients should be instructed to report to their physicians any symptoms of agranulocytosis, such as fever or sore throat.
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Organisms Affected
Humans and other mammals