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Pronunciation |
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(MIG
li
tol) |
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U.S. Brand
Names |
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Glyset® |
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Generic
Available |
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No |
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Pharmacological Index |
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Antidiabetic Agent (Miscellaneous) |
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Use |
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Noninsulin-dependent diabetes mellitus (NIDDM)
Monotherapy adjunct to diet to improve glycemic control in patients with
NIDDM whose hyperglycemia cannot be managed with diet alone
Combination therapy with a sulfonylurea when diet plus either miglitol or a
sulfonylurea alone do not result in adequate glycemic control. The effect of
miglitol to enhance glycemic control is additive to that of sulfonylureas when
used in combination. |
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Pregnancy Risk
Factor |
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B |
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Contraindications |
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Diabetic ketoacidosis, inflammatory bowel disease, colonic ulceration,
partial intestinal obstruction, patients predisposed to intestinal obstruction,
chronic intestinal diseases associated with marked disorders of digestion or
absorption or with conditions that may deteriorate as a result of increased gas
formation in the intestine; hypersensitivity to drug or any of its
components |
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Warnings/Precautions |
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GI symptoms are the most common reactions. The incidence of abdominal pain
and diarrhea tend to diminish considerably with continued treatment. Long-term
clinical trials in diabetic patients with significant renal dysfunction (serum
creatinine >2 mg/dL) have not been conducted. Treatment of these patients is
not recommended. Because of its mechanism of action, miglitol administered alone
should not cause hypoglycemia in the fasting of postprandial state. In
combination with a sulfonylurea will cause a further lowering of blood glucose
and may increase the hypoglycemic potential of the
sulfonylurea. |
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Adverse
Reactions |
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>10%: Gastrointestinal: Flatulence (41.5%), diarrhea (28.7%), abdominal
pain (11.7%)
1% to 10%: Dermatologic: Rash |
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Overdosage/Toxicology |
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An overdose of miglitol will not result in hypoglycemia. An overdose may
result in transient increases in flatulence, diarrhea, and abdominal discomfort.
No serious systemic reactions are expected in the event of an
overdose. |
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Drug
Interactions |
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Decreased effect:
Digestive enzymes (amylase, pancreatin, charcoal) may reduce the effect of
miglitol and should not be taken concomitantly |
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Mechanism of
Action |
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In contrast to sulfonylureas, miglitol does not enhance insulin secretion;
the antihyperglycemic action of miglitol results from a reversible inhibition of
membrane-bound intestinal alpha-glucosidases which hydrolyze oligosaccharides
and disaccharides to glucose and other monosaccharides in the brush border of
the small intestine; in diabetic patients, this enzyme inhibition results in
delayed glucose absorption and lowering of postprandial
hyperglycemia |
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Pharmacodynamics/Kinetics |
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Absorption: Saturable at high doses: 25% mg dose: Completely absorbed; 100 mg
dose: 50% to 70% absorbed; Peak concentrations within 2-3 hours
Distribution: Vd: 0.18 L/kg
Protein binding: Negligible (<4%)
Metabolism: Not metabolized
Half-life, elimination: ~2 hours
Elimination: Renal as unchanged drug |
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Usual Dosage |
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Adults: Oral: 25 mg 3 times/day with the first bite of food at each meal; the
dose may be increased to 50 mg 3 times/day after 4-8 weeks; maximum recommended
dose: 100 mg 3 times/day
Dosing adjustment in hepatic impairment: No adjustment necessary
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Monitoring
Parameters |
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Monitor therapeutic response by periodic blood glucose tests; measurement of
glycosylated hemoglobin is recommended for the monitoring of long-term glycemic
control |
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Reference Range |
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Target range: Adults:
Glycosylated hemoglobin: <7% |
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Mental Health: Effects
on Mental Status |
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None reported |
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Mental Health:
Effects on Psychiatric
Treatment |
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None reported |
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Dental Health: Local
Anesthetic/Vasoconstrictor
Precautions |
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No information available to require special precautions |
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Dental Health:
Effects on Dental Treatment |
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No effects or complications reported |
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Patient
Information |
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Take this medication exactly as directed, with the first bite of each main
meal. Do not change dosage or discontinue without first consulting prescriber.
Do not take other medications with or within 2 hours of this medication unless
so advised by prescriber. It is important to follow dietary and lifestyle
recommendations of prescriber. You will be instructed in signs of
hypo-/hyperglycemia by prescriber or diabetic educator. If combining miglitol
with other diabetic medication (eg, sulfonylureas, insulin), keep source of
glucose (sugar) on hand in case hypoglycemia occurs. You may experience mild
side effects during first weeks of therapy (eg, bloating, flatulence, diarrhea,
abdominal discomfort); these should diminish over time. Report severe or
persistent side effects, fever, extended vomiting or flu, or change in color of
urine or stool. Breast-feeding precautions: Consult prescriber if
breast-feeding. |
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Dosage Forms |
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Tablet: 25 mg, 50 mg, 100 mg |
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