Repaglinide For Diabetes: Uses, Dosing, Side Effects Guide

About repaglinide

Repaglinide is an

antidiabetic medicine

specifically used to manage

type 2 diabetes mellitus

. It is also known by the brand name

Enyglid®

and is available in tablet form. Type 2 diabetes occurs when the pancreas does not produce enough insulin or the body cannot use insulin effectively, leading to elevated blood glucose levels. Insulin, a hormone produced by the pancreas, regulates blood sugar by allowing glucose to enter cells for energy. In diabetes, poor regulation increases risks of complications like heart disease, stroke, kidney failure, nerve damage, vision loss, and gum disease.

Repaglinide belongs to the

meglitinide class

of drugs, which work by stimulating the pancreas to release more insulin, particularly around mealtimes. Unlike longer-acting sulfonylureas, repaglinide has a rapid onset and short duration, making it ideal for controlling post-meal blood sugar spikes (postprandial hyperglycaemia). It is prescribed alongside diet, exercise, and weight management when these alone fail to control blood glucose. Repaglinide may also be combined with metformin or other antidiabetics for better control.

Good blood glucose control with repaglinide reduces long-term complications by preventing sustained high sugar levels. It is not suitable for type 1 diabetes or diabetic ketoacidosis. Treatment is typically lifelong, requiring regular monitoring by a healthcare provider.

Key details of repaglinide

Type of medicine	Used for	Also called	Available as
An antidiabetic medicine	Type 2 diabetes mellitus	Enyglid®	Tablets

How to take repaglinide

Always follow your doctor’s instructions and read the patient information leaflet (PIL) provided with the tablets for full details on usage and side effects. Repaglinide is taken

orally, 15 minutes before each main meal

(e.g., breakfast, lunch, dinner), but can be taken anytime within 30 minutes prior. The tablets should be swallowed whole with water.

Dosing is individualised based on blood glucose monitoring to achieve optimal control with the lowest effective dose. Standard adult starting dose is

0.5 mg

before meals, adjustable up to

4 mg

per meal, not exceeding

16 mg daily

. Skip the dose if you skip a meal to avoid hypoglycaemia. Your doctor will regularly test blood glucose and may adjust doses, especially if combining with other antidiabetics.

• Important lifestyle advice: Adhere to prescribed diet, exercise, and weight loss plans. Quit smoking if applicable.
• Hypoglycaemia risk: Repaglinide can cause low blood sugar (hypoglycaemia). Recognise symptoms like sweating, trembling, hunger, confusion, or irritability. Treat promptly with fast-acting sugar (e.g., glucose tablets, fruit juice, or candy), followed by a longer-acting carbohydrate. Severe cases may need medical help.
• Surgery/dental procedures: Inform your healthcare provider about diabetes and repaglinide. Doses may be skipped if unable to eat.
• Over-the-counter medicines: Consult a pharmacist before buying any, as interactions may occur.
• Monitoring: Regularly check blood glucose at home. Continue treatment lifelong unless advised otherwise.

If you miss a dose but eat the meal later, take it up to 30 minutes before. Do not double doses. Store tablets at room temperature, away from moisture and children.

Getting the most from your treatment

To maximise benefits, integrate repaglinide with comprehensive diabetes management. Maintain a balanced diet low in refined sugars and high in fibre, with consistent meal timing to match medication action. Regular physical activity, like 150 minutes of moderate exercise weekly, enhances insulin sensitivity.

Monitor blood glucose frequently, especially when starting, dose-changing, or ill. HbA1c tests every 3-6 months assess long-term control. Weight management is crucial, as repaglinide may cause mild weight gain.

Avoid alcohol excess, as it increases hypoglycaemia risk. If pregnant, breastfeeding, or planning, discuss alternatives—repaglinide is not recommended. Regular check-ups monitor for complications.

Side-effects

Repaglinide is generally well-tolerated, but side effects occur. Most common are

hypoglycaemia

(up to 31% incidence), abdominal pain, diarrhoea, nausea, and vomiting. Hypoglycaemia is dose-related and more likely with skipped meals or exercise.

Common side effects (≥1 in 100 people)

Side effect	Frequency	Management
Hypoglycaemia (low blood sugar)	Very common	Treat with sugar source; adjust dose
Abdominal pain, diarrhoea	Common	Symptomatic relief; report if persistent
Other GI: nausea, vomiting	Common	Take with food if tolerated

Rare but serious effects include allergic reactions (rash, itching, swelling), jaundice, or severe hypoglycaemia. Seek immediate medical help for chest pain, breathlessness, or confusion. Long-term use may rarely cause liver issues.

Report persistent or worrying effects to your doctor. Side effects often improve as body adjusts.

How to cope with side effects

Hypoglycaemia: Always carry glucose sources. Test blood sugar if symptoms occur. Inform family/friends about recognition and treatment. Adjust lifestyle to prevent.

Stomach upset: Take exactly as timed with meals. Eat smaller, frequent meals if needed. Antacids may help if approved.

Weight gain: Monitor diet and exercise. If side effects severe, your doctor may switch medications.

Precautions

Do not take if allergic to repaglinide, with type 1 diabetes, ketoacidosis, severe liver/kidney disease, or certain conditions/medicines (e.g., gemfibrozil). Caution in elderly, G6PD deficiency, or heart issues.

Inform your doctor of all medications, including herbal remedies. Avoid grapefruit juice.

Interactions

Repaglinide interacts with drugs affecting liver enzymes (CYP3A4, e.g., ketoconazole increases levels; rifampicin decreases). Gemfibrozil contraindicated. Beta-blockers mask hypoglycaemia. NSAIDs, warfarin, or other antidiabetics require monitoring.

Other medicines interactions

Common interactions:

• Medicines raising repaglinide levels: Ketoconazole, itraconazole, erythromycin—increased hypoglycaemia risk.
• Lowering levels: Rifampicin, barbiturates—reduced efficacy.
• Other antidiabetics: Additive hypoglycaemia with metformin, insulin.
• CYP2C8 inhibitors: Like trimethoprim—monitor closely.

Always disclose full medication list.

Frequently asked questions

Can I drink alcohol while taking repaglinide?

Limit alcohol; excess increases hypoglycaemia risk. Discuss with your doctor.

What if I forget a dose?

Skip if meal skipped. Take before next meal if eaten.

Does repaglinide cause weight gain?

Possible mild gain; manage with diet/exercise.

Is repaglinide safe in pregnancy?

Not recommended; use insulin instead. Consult doctor.

How quickly does repaglinide work?

Rapid onset within 15-30 minutes, peaks in 1 hour, lasts 4-6 hours.