Glimepiride Denk 3

Indications

• Type 2 diabetes mellitus

Dosage

Children: null

Adults: Initially, 1 mg daily, adjusted according to response, increased in steps of 1 mg every 1 to 2 weeks, with a maximum dose of 6 mg per day. The dose should be taken shortly before or with the first main meal.

Mechanism of action

Glimepiride works by binding to specific receptors on the pancreatic beta cells, leading to an increase in insulin secretion. This occurs through the closure of ATP-sensitive potassium channels, which depolarizes the cell membrane and opens voltage-gated calcium channels, resulting in calcium influx and subsequent insulin release. Additionally, glimepiride may enhance insulin sensitivity in peripheral tissues.

Pharmacodynamics

Glimepiride enhances insulin secretion in response to glucose, reducing blood glucose levels postprandially. It has a relatively long duration of action compared to other sulfonylureas, providing more stable glycemic control. The drug also has effects on peripheral insulin sensitivity, contributing to its overall hypoglycemic effect.

Pharmacokinetics

Glimepiride is well absorbed from the gastrointestinal tract, with peak plasma concentrations occurring within 2 to 3 hours after oral administration. It is highly protein-bound (approximately 99%), mainly to albumin, which affects its distribution. The drug undergoes hepatic metabolism, primarily via CYP2C9, and is excreted in the urine as metabolites. The elimination half-life is approximately 5 to 9 hours, allowing for once-daily dosing.

Contra-indications

• Acute porphyrias

Adverse effects

• Hypoglycaemia
• Dizziness
• Drowsiness
• Tremor
• Confusion
• Headache
• Hyponatraemia
• Malaise
• Gastrointestinal discomfort
• Hypersensitivity
• Vasculitis

Interactions

• Ceritinib: Moderate (increases exposure)
• Mifepristone: Unknown (increases exposure)
• Nitisinone: Unknown (increases exposure)

Precautions

• Caution in hepatic impairment
• Monitor regularly for hepatic and haematological parameters
• Use with caution in patients with a history of allergy to sulphonylureas

Pregnancy

The use of sulfonylureas in pregnancy should generally be avoided because of the risk of neonatal hypoglycaemia.

Breast-feeding

Avoid-theoretical possibility of hypoglycaemia in the infant.

Storage

Store in a cool, dry place, away from light.

Formulations

• Glimepiride 1 mg tablets
• Glimepiride 2 mg tablets
• Glimepiride 3 mg tablets
• Glimepiride 4 mg tablets

Indications

• Lactose intolerance
• As a filler or excipient in pharmaceutical formulations

Dosage

Children: Refer to the BNF for Children for specific dosing information based on age and clinical context.

Adults: Refer to the BNF for specific dosing information based on clinical context.

Mechanism of action

Lactose is metabolized in the intestine by the enzyme lactase into its constituent monosaccharides, glucose and galactose. In individuals with lactase deficiency, unabsorbed lactose passes into the colon, where it is fermented by bacteria, leading to gas production and osmotic effects that contribute to diarrhea.

Pharmacodynamics

The pharmacodynamics of lactose are primarily related to its effects on gastrointestinal function. In healthy individuals, lactose is effectively broken down into glucose and galactose, which are absorbed and utilized for energy. In individuals with lactose intolerance, the unabsorbed lactose can cause osmotic diarrhea and colonic fermentation, leading to discomfort and symptoms associated with lactose intolerance.

Pharmacokinetics

Lactose is not absorbed in the gastrointestinal tract until it is hydrolyzed into glucose and galactose by lactase. The absorption of glucose and galactose occurs in the small intestine. The half-life is not applicable as lactose is not typically administered as a medication but is rather ingested as a natural component of food. Its metabolism primarily occurs in the intestine.

Adverse effects

• Bloating
• Diarrhea
• Abdominal pain
• Flatulence

Precautions

• Use with caution in patients with lactose intolerance.
• Consider potential for gastrointestinal upset in sensitive individuals.

Pregnancy

Lactose is generally considered safe for use during pregnancy. However, consult a healthcare professional for individual advice.

Breast-feeding

Lactose is safe to use while breastfeeding, as it is a natural sugar present in breast milk.

Storage

Store in a cool, dry place, away from direct sunlight.

Formulations

• Powder
• Granules
• Tablets
• Syrup

Indications

• Nutritional support
• Source of carbohydrates
• Dietary fiber source
• Animal feed

Dosage

Children: As with adults, there are no specific dosing recommendations for maize for children. It can be introduced into the diet in age-appropriate forms and quantities, keeping in mind the overall dietary balance.

Adults: There are no specific dosing recommendations for maize as it is typically consumed as part of a balanced diet. It can be included in daily meals in various forms such as whole kernels, flour, or as part of dishes.

Mechanism of action

Maize primarily acts as a source of energy due to its high carbohydrate content. The complex carbohydrates in maize are broken down into glucose, which is then utilized by the body for energy production. It also contributes to dietary fiber intake, which can aid in digestive health and regulation of blood sugar levels.

Pharmacodynamics

The consumption of maize influences blood glucose and insulin levels due to its carbohydrate content. It has a relatively low glycemic index when consumed in whole form, which can help in managing blood sugar levels. The dietary fiber present in maize can also promote satiety and aid in weight management.

Pharmacokinetics

The digestion of maize begins in the mouth with salivary amylase breaking down starches into simpler sugars. In the stomach and small intestine, enzymes further break down these carbohydrates. The resultant glucose is absorbed into the bloodstream, where it is transported to cells for energy production. The absorption rate can vary based on the form of maize consumed (e.g., whole kernels versus processed forms).

Pregnancy

Maize is generally considered safe for consumption during pregnancy as it is a staple food and provides essential nutrients.

Breast-feeding

Maize is safe to consume while breastfeeding and can provide important nutrients to both the mother and the infant.

Storage

Store in a cool, dry place, away from moisture and pests. Properly sealed containers can help prolong shelf life.

Formulations

• Whole maize grains
• Maize flour (cornmeal)
• Maize starch
• Maize oil

Indications

• Nutritional supplementation
• Energy source in enteral nutrition
• Excipient in pharmaceutical formulations

Dosage

Children: Refer to specific guidelines or product inserts for dosing information, as it can vary based on the context of use.

Adults: Refer to specific guidelines or product inserts for dosing information, as it can vary based on the context of use.

Mechanism of action

Starch is broken down into glucose units by enzymes such as amylase during digestion. The glucose is then absorbed in the intestines and utilized for energy production in the body's cells. This pathway involves hydrolysis of the glycosidic bonds, converting starch into simpler sugars.

Pharmacodynamics

Starch primarily serves as an energy source. Its digestion and absorption lead to an increase in blood glucose levels, which provides energy for metabolic processes. In this context, it plays a crucial role in maintaining energy homeostasis in the body.

Pharmacokinetics

Starch is not absorbed in its polymeric form; it must first be enzymatically hydrolyzed into simpler sugars such as maltose and glucose. The digestion and absorption of starch occur predominantly in the small intestine, with glucose being readily absorbed into the bloodstream. The rate of absorption can vary depending on the type of starch and its physical form.

Adverse effects

• Allergic reactions
• Gastrointestinal discomfort
• Diarrhea
• Constipation

Precautions

• Use with caution in individuals with known allergies to starch or starch derivatives
• Monitor for gastrointestinal symptoms in patients with a history of digestive disorders

Pregnancy

Starch is generally considered safe for use during pregnancy. However, it should be consumed in moderation as part of a balanced diet.

Breast-feeding

Starch is deemed safe for nursing mothers when used in moderation as part of a balanced diet.

Storage

Store in a cool, dry place away from moisture and direct sunlight.

Formulations

• Powder
• Granules
• Tablets
• Suspensions