HY-PO-TONE® 250

Country: South Africa

Language: English

Source: South African Health Products Regulatory Authority (SAHPRA)

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Patient Information leaflet

                                INDICATIONS [/za_1259.html#1]
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CONTRA-INDICATIONS [/za_1259.html#1]
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DOSAGE [/za_1259.html#1]
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SIDE-EFFECTS [/za_1259.html#1]
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PREGNANCY [/za_1259.html#1]
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OVERDOSE [/za_1259.html#1]
    
IDENTIFICATION [/za_1259.html#1]
  [/za_1259.html#1]    PATIENT INFORMATION
HY-PO-TONE® 250
HY-PO-TONE® 500
SCHEDULING STATUS:
S3
PROPRIETARY NAME
(and dosage form):
HY-PO-TONE
®
 250
HY-PO-TONE
®
 500
COMPOSITION:
Each tablet contains 250 mg or 500 mg anhydrous 
METHYLDOPA
.
PHARMACOLOGICAL CLASSIFICATION:
A 7.1 3 Other hypotensives.
PHARMACOLOGICAL ACTION:
The exact mechanism of pharmacological action is not known. It may involve stimulation of central alpha-adrenergic
receptors by a metabolite, alpha-methylnorepinephrine, thus inhibiting sympathetic outflow to the heart, kidneys and
peripheral vasculature. Reduced peripheral resistance and plasma renin activity may also contribute to its effect.
INDICATIONS:
Methyldopa is indicated in the treatment of essential hypertension.
CONTRA-INDICATIONS:
Methyldopa is contra-indicated in persons known to be sensitive to it. It should be used with caution in patients with
impaired kidney or liver function or with a history of liver disease or mental depression. It should not be given to
patients with acute liver disease or phaeochromocytoma. It is contra-indicated during pregnancy. Methyldopa has been
reported to aggravate porphyria.
DOSAGE AND DIRECTIONS FOR USE:
Doses of 0,25 g two or three times daily during the first 48 hours. Thereafter, the daily dosage may be adjusted
preferably at intervals of not less than 48 hours, until an adequate response has been achieved. The usual dose is
from 0,5 g –2 g daily. A suggested
                                
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