Glimarex

Glimarex

glimepiride

Manufacturer:

Taiwan Biotech

Distributor:

New Smart Formulae
Full Prescribing Info
Contents
Glimepiride.
Description
Each tablet contains Glimepiride 2 mg.
Glimepiride is an oral blood-glucose-lowering drug of the sulfonylurea class. Chemically, glimepiride is identified as 1-[p-[2-(3-ethyl-4-methyl-2-oxo-3-pyrroline-1-carboxamido) ethyl] phenyl] sulfonyl]-3-(trans-4-methylcyclohexyl) urea.
Action
Pharmacology: Glimepiride is a sulfonylurea. Glimepiride decreases blood glucose concentrations mainly by stimulating insulin release from pancreatic beta cells. This effect is based predominantly on an improved responsiveness of the pancreatic beta cells to the physiological glucose stimulus. Glimepiride also has extra pancreatic (insulin-sensitizing and insulin-mimetic) effects. The effect of Glimepiride is dose-dependent over the dose range of 1 to 6 mg. The physiological response to acute physical exercise, i,e, reduction of insulin secretion, is still present with Glimepiride.
There was no significant difference in effect regardless of whether the drug was given to 30 minutes or immediately before meal. In diabetic patients, metabolic control over 24 hours can be achieved with a single dose.
The absolute bioavailability of Glimepiride is complete. Food intake has no relevant influence on absorption. Maximum serum concentrations are reached approximately 2.5 hours after oral intake and there is a linear relationship between dose and both maximum concentrations and area under the time/concentration curve.
Glimepiride has a high protein binding (>99%). Mean dominant serum half-life, which is of relevance for the serum concentrations under multiple-dose conditions, is about 5 to 8 hours. After single dose radio labeled Glimepiride, 58% of the radioactivity was recovered in the urine and 35% in the faeces. No unchanged substance was detected in the urine. Pharmacokinetics was similar in males and females, as well as in young and elderly patients.
Indications/Uses
For the treatment of type 2 diabetes mellitus.
Dosage/Direction for Use
In principle, the dosage of Glimepiride is determined by the desired blood glucose level. The dosage of Glimepiride must be lowest which is sufficient to achieve the desired metabolic treatment with Glimepiride must be initiated and monitored by a doctor. Glimepiride must be taken at the times and in the doses prescribed. During treatment with Glimepiride glucose levels in blood and urine must be measured regularly. In addition, it is recommended that regular determinations of the proportion of glycated haemoglobin be carried out.
If a patient forgets to take a dose, this must never be corrected by subsequently taking a larger dose. Measure for dealing with such situations (in particular forgetting a dose or skipping a meal) where a dose cannot be taken at the prescribed time must be discussed and agreed between physician and patient beforehand.
If it is discovered that too high a dose or an extra dose of Glimepiride has been taken, a physician must be notified immediately.
Initial Dose and Dose Titration: The usual initial dose is 1 mg Glimepiride once daily. If necessary, the daily dose can be increased. It is recommended that the increase be guided by regular blood glucose monitoring and that the dose be increased gradually, i.e. at intervals of one to two weeks and according to the following dose steps: 1 mg-2 mg-3 mg-4 mg-6 mg, daily doses of more than 6 mg are more effective only in a minority of patients. A maximum of 8 mg per day may not be exceeded.
Dose range in patients with well controlled diabetes: Usual daily doses in patients with well controlled diabetes are 1 to 4 mg Glimepiride.
Distribution of doses: Timing and distribution of doses are to be decided by the physician, taking into consideration the patient's current life-style.
Normally a single daily dose of Glimepiride is sufficient. It is recommended that this dose be taken immediately before a substantial breakfast or if none is taken-immediately before the first main meal.
It is very important not to skip meals after the tablet(s) have been taken.
Secondary dosage adjustment: An improvement in the control of diabetes is associated with higher insulin sensitivity, therefore Glimepiride requirements may fall as treatment proceeds. To avoid hypoglycaemia, dose reduction or cessation of Glimepiride therapy must therefore be considered, in time correction of dosage must also be considered, whenever the patient's weight changes the patient's lifestyle changes or other factors arise which cause an increased susceptibility to hypoglycaemia or hyperglycaemia (refer to Precautions).
Duration of Treatment: Treatment with Glimepiride is normally long-term therapy.
Change over from other oral diabetics to Glimepiride: There is no exact dosage relationship between Glimepiride and other oral antidiabetics. When substituting glimepiride for other oral antidiabetics. It is recommended that the procedure be the same as for initial dosage, starting with daily doses of 1 mg. This applies even in cases where the patient is being switched from the maximum dose of another oral antidiabetic.
Contraindications
Glimepiride must not be used in patients hypersensitive to Glimepiride, other sulphonylureas, other sulfonamides, in pregnant or breast-feeding women as safety has not been shown impaired liver function and moderate to more severe impaired renal function and in children.
Warnings
Special Warning on Increased Risk of Cardiovascular Mortality. The administration of oral hypoglycaemic drugs has been reported to be associated with increased cardiovascular mortality as compared to treatment with diet alone or diet plus insulin. This warning is based on the study conducted by the University Group Diabetes Program (UGDP), a long term prospective clinical trial designed to evaluate the effectiveness of glucose-lowering drugs in preventing or delaying vascular complications in patients with non-insulin-dependent diabetes. The study involved 823 patients who were randomly assigned to one of four treatment groups. UGDP reported that patients treated for 5 to 8 years with diet plus a fixed dose of tolbutamide (1.5 g per day) had a rate of cardiovascular mortality approximately 2-½ times that of patients treated with diet alone. A significant increase in total mortality was not observed, but the use of tolbutamide was discontinued based on the increase in cardiovascular mortality, thus limiting the opportunity for the study to show an increase in overall mortality. Despite controversy regarding the interpretation of these results, the finding of the UGDP study provide an adequate basis for this warning. The patient should be informed of the potential risks and advantages of Glimepiride (Glimepiride tablets) and of alternative modes of therapy.
Although only one drug in the sulfonylurea class (tolbutamide) was included in this study, it is prudent from a safety standpoint to consider that this warning may also apply to other oral hypoglycemic drugs in this class. In view of their close similarities in mode of action and chemical structure.
Special Precautions
Treatment with Glimepiride must be initiated and monitored by a physician. The patient must take Glimepiride at the times and in the doses prescribed by the doctor, normally at the same time everyday. To achieve the goal of treatment of Glimepiride-optimal control of blood glucose-adherence to correct diet, regular and sufficient physical exercise and, if necessary, reduction of body weight are just as necessary as regular ingestion of Glimepiride.
Clinical signs of a still insufficiently lowered blood glucose (hyperglycaemia) are e.g. increased urinary frequency (polyuria), intense thirst, dryness of the mouth and dry skin. In the initial weeks of treatment, the risk of hypoglycemia may be increased and necessitates especially careful monitoring.
Factors Favoring Hypoglycaemia include: unwillingness or (more commonly in older patients) incapacity of the patient to cooperate; undernourishment, irregular meal times, or skipped meals; Imbalance between physical exertion and carbohydrate intake; Alteration of diet; Consumption of alcohol, especially in combination with skipped meals; Impaired renal function; Severe impairment of liver function; Overdosage with Glimepiride; Certain uncompensated disorders of the endocrine system affecting carbohydrate metabolism or counter-regulation of hypoglycaemia (as for example in certain disorders of thyroid function and in anterior pituitary or corticoadrenal insufficiency); Concurrent administration of certain other medicines (refer to interactions); Treatment with Glimepiride in the absence of any indication.
The patient must inform the physician about such factors and about hypoglycaemia episodes since they may indicate the need for particularly careful monitoring. If such risk factors for hypoglycaemia are present, it may be necessary to adjust the dosage of Glimepiride or the entire therapy. This also applies whenever illness occurs during therapy or the patient's life-style changes.
Those symptoms of hypoglycaemia which reflect the body's adrenergic counter-regulation (refer to Adverse Reactions) may be milder or absent where hypoglycaemia develops gradually, in the elderly and where there is autonomic neuropathy or where the patient is receiving concurrent treatment with beta-blockers, clonidine, reserpine, guanethidine or other sympatholytic drugs.
Hypoglycaemia can almost always be promptly controlled by immediate intake of carbohydrates (glucose or sugar, e.g. in the form of sugar lumps, sugar sweetened fruit juice or sugar sweetened tea). For this purpose patients must carry a minimum of 20 g of glucose with them at all times. They may require the assistance of other persons to avoid complications. Artificial sweeteners are ineffective in controlling hypoglycaemia. It is known from other sulfonylureas that despite initially successful counter measures, hypoglycaemia may recur. Patients must, therefore remain under close observation. Severe hypoglycaemia further requires immediate treatment and follow-up by a physician and in some circumstances in patients hospital care.
In exceptional stress situations (e.g. trauma, surgery, febrile infections) blood glucose regulation may deteriorate and a temporary change to insulin may be necessary to maintain good metabolic control.
Insulin in the treatment of choice for non-insulin-dependent diabetes mellitus (NIDDM) with renal and hepatic dysfunction. No experience has been gained concerning the use of Glimepiride in patients with impairment of liver function. In patients with severe impairment of renal function, change over to insulin is indicated, to achieve optimal metabolic control (see Contraindications).
Side Effects
Possible symptoms of hypoglycaemia include headache, ravenous hunger, nausea, vomiting, lassitude, sleepiness, sleep disorders, restlessness, aggressiveness, impaired concentration, impaired alertness and reactions, depression, confusion, speech disorders, aphasia, visual disorders, tremor, paresis, sensory disturbances, dizziness, helplessness, loss of control, delirium, cerebral convulsions, somnolence and loss of consciousness up to and including coma, shallow respiration and bradycardia.
In addition, signs of adrenergic counter-regulation may be present such as sweating, clammy skin, anxiety, tachycardia, hypertension, palpitations, angina pectoris and cardiac arrhythmias. The clinical picture of a severe hypoglycaemic attack may resemble that of stroke. The symptoms of hypoglycaemia may persist if hypoglycaemia is corrected.
Eyes: Especially at the start of treatment, there may be temporary visual impairment due to the change in blood glucose levels. The cause is temporary alteration in the turgidity and hence the refractive index of the lens, this being dependent on blood glucose level.
Digestive Tract: Occasionally, gastrointestinal symptoms such as nausea, vomiting, sensations of pressure or fullness in the epigastrium, abdominal pain and diarrhea may occur. In isolated cases, there may be elevation of liver enzyme levels, impairment of liver function (e.g. with cholestasis and jaundice) and hepatitis which may also lead to life-threatening liver failure.
Blood: Potentially life-threatening changes in the blood picture may occur, such as thrombocytopenia and, in isolated cases, leucopenia. Glimepiride, in addition to the above may cause haemolytic anemia or erythrocytopenia, granulocytopenia, agranulocytosis and (e.g. due to myelosuppression) pancytopenia.
Allergic or pseudoallergic reactions may occur such as itching, urticaria or rashes. These mild reactions may develop into serious and even life-threatening reactions with dyspnoea and a fall in blood pressure, sometimes progressing to chock. In the event of urticaria a physician must therefore be notified immediately.
In isolated cases, a decrease in serum sodium concentration has been seen and allergic vasculitis or hypersensitivity of the skin to light may occur. If any of these reactions occur a doctor should be consulted.
Alertness and reactions may be impaired due to hypo- or hyperglycaemia, especially when beginning or after altering treatment, or when Glimepiride is not taken regularly. This may for example, affect the ability to drive or to operate machinery.
Drug Interactions
Patients who take or discontinue taking certain other medicines while undergoing treatment with Glimepiride may experience changes in blood glucose control. The following interactions must be considered: Potentiation of the blood-glucose-lowering effect and thus in some instances hypoglycaemia may occur when one of the following drugs is taken, for example, insulin and other oral antidiabetics, MAO inhibitors, ACE inhibitors, miconazole, anabolic steroids and male sex hormones, para-aminosalicylic acid, chloramphenicol, pentoxifyline (high dose parenteral), coumarin derivatives, phenylbutazone, azapropazone, oxyphenbutazone, cyclophospamide, probenecid, disopyramide, quinolones, fenfluramine, salicylates, fenyramidol, sulphinpyrazone, fibrates, sulfonamide antibiotics, flouxetine, tetracyclines, guanethidine, tritoqualine, trofosfamide.
Weakening of the blood-glucose-lowering effect and thus raised glucose levels may occur when one of the following drugs is taken, for example: acetazolamide, laxatives (after protracted use), barbiturates, nicotinic acid.
Storage
Store at temperatures not exceeding 30°C.
MIMS Class
ATC Classification
A10BB12 - glimepiride ; Belongs to the class of sulfonylureas. Used in the treatment of diabetes.
Presentation/Packing
Tab 2 mg x 120's.
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