Diabetes Medications: A Complete Guide for Indian Patients
India is home to over 77 million people living with diabetes — making it the diabetes capital of the world. Managing blood sugar levels requires the right combination of diet, exercise, and medication. This guide explains the major classes of diabetes medicines, how they work, and important precautions.
Type 1 vs Type 2 Diabetes Medication Needs
Type 1 Diabetes: The body produces no insulin. Insulin therapy is essential and lifelong — there is no alternative.
Type 2 Diabetes: The body either doesn’t produce enough insulin or doesn’t use it effectively. Treatment typically begins with lifestyle changes and oral medicines, with insulin added if control is inadequate.
First-Line Oral Diabetes Medicine: Metformin
Metformin (brand names: Glycomet, Glucophage, Walaphage) is the most prescribed diabetes medicine in India. It:
- Reduces glucose production by the liver
- Improves insulin sensitivity
- Does not cause weight gain
- Does not cause hypoglycaemia (low blood sugar) when used alone
- Has cardiovascular protective benefits
- Is affordable and widely available as a generic
Common side effects: Nausea, diarrhoea, stomach upset — usually mild and settle over time. Taking with meals reduces GI side effects.
Important: Hold metformin before CT scans with contrast dye and before any surgery requiring anaesthesia. Consult your doctor.
Sulphonylureas
Examples: Glibenclamide, Glipizide, Gliclazide (Diamicron), Glimepiride (Amaryl, Glimpid)
These medicines stimulate the pancreas to release more insulin. They are effective but carry a risk of hypoglycaemia, especially in elderly patients or those who skip meals.
Side effects: Hypoglycaemia, weight gain
DPP-4 Inhibitors (Gliptins)
Examples: Sitagliptin (Januvia), Vildagliptin (Galvus), Saxagliptin, Teneligliptin
Gliptins work by blocking the enzyme that breaks down natural insulin-stimulating hormones (incretins). They cause minimal hypoglycaemia and are weight-neutral. Teneligliptin is particularly popular in India due to lower cost.
Side effects: Mild and infrequent — nasopharyngitis, joint pain (rare)
SGLT2 Inhibitors (Gliflozins)
Examples: Dapagliflozin (Forxiga), Empagliflozin (Jardiance), Canagliflozin
These newer medicines work by making the kidneys excrete excess glucose in urine. They have additional proven benefits including:
- Weight loss (1–3 kg)
- Reduced cardiovascular events in high-risk patients
- Kidney protection in diabetic kidney disease
Side effects: Genital fungal infections (thrush), urinary tract infections, rare risk of diabetic ketoacidosis
GLP-1 Receptor Agonists
Examples: Semaglutide (Ozempic), Liraglutide (Victoza, Saxenda), Dulaglutide (Trulicity)
These injectable medicines mimic the gut hormone GLP-1, which stimulates insulin release only when blood sugar is high. Benefits include:
- Significant weight loss (5–15 kg)
- Major cardiovascular protection
- Convenient weekly injections (semaglutide, dulaglutide)
Side effects: Nausea, vomiting (common initially), reduced appetite
Insulin Therapy
Insulin is the most powerful diabetes medicine available. Types used in India include:
- Rapid-acting (Novorapid, Humalog): Given just before meals
- Short-acting (Regular/Actrapid): Given 30 minutes before meals
- Intermediate-acting (NPH/Insulatard): Covers several hours; often given twice daily
- Long-acting (Glargine/Lantus, Detemir/Levemir): Once-daily basal insulin
- Premixed insulin: Combination of short and intermediate (30/70 mix); common in India
Insulin Storage
- Unopened vials/pens: refrigerate at 2–8°C
- In-use pens: can be kept at room temperature (below 25–30°C) for up to 28–30 days
- Never freeze insulin — it destroys its activity
Monitoring Blood Sugar While on Diabetes Medicines
- Fasting blood sugar target: 80–130 mg/dL
- Post-meal (2 hours): below 180 mg/dL
- HbA1c target: below 7% (may vary based on individual factors)
- Check HbA1c every 3 months initially, then every 6 months once stable
Recognising and Treating Hypoglycaemia (Low Blood Sugar)
Symptoms: Sweating, trembling, dizziness, confusion, palpitations. Blood sugar below 70 mg/dL.
Treatment: Immediately consume 15g of fast-acting carbohydrates — 4 glucose tablets, 150ml fruit juice, or 3 teaspoons of sugar dissolved in water. Recheck sugar after 15 minutes.
Get Your Diabetes Medicines at Dashvanth Healthcare
Our pharmacy stocks all major diabetes medications including metformin, gliptins, SGLT2 inhibitors, and insulin. Our pharmacists can advise on correct insulin injection technique, storage, and managing medicine interactions. Our diagnostic lab offers HbA1c, fasting glucose, and post-meal glucose testing.
