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Insulin Lispro: uses, side effects & brands
Lispro is a rapid-acting mealtime insulin. It belongs to the Injectable diabetes medicine (insulin analogue & GLP-1) group. These injectable medicines control blood sugar; GLP-1 types also aid weight loss.
Drug type — dosing is set by your doctor
| Measure | Range |
|---|---|
| Drug class | Injectable diabetes medicine (insulin analogue & GLP-1) |
| Type | Prescription |
| Dose | Individual — ask your doctor or pharmacist |
What it is used for
- Covering the rise in sugar after meals
- Type 1 diabetes (with a background insulin)
- Type 2 diabetes needing mealtime insulin
- Insulin pumps
Common brand names
- India: Humalog, Lispro
- Worldwide: Humalog, Admelog
Common side effects
- Low blood sugar (hypoglycaemia)
- Redness or itching at the injection site
- Lumps under the skin if the same spot is used repeatedly
- Weight gain
Before taking it — precautions
- Inject with your meal — injecting without eating can cause low sugar
- Rotate injection sites and never share pens, even with a new needle
- Illness, alcohol, exercise and new medicines can change sugar levels — tell your doctor
When to see a doctor urgently
- Low sugar: shaking, sweating, confusion or fits — take fast sugar and get help (urgent)
- Very high sugar with vomiting, deep breathing or drowsiness (urgent)
- Swelling of the face, widespread rash or difficulty breathing (urgent)
Not a prescription — no dose shown. The right dose of insulin lispro depends on age, weight, kidney/liver function and the condition, so MedDroid does not show a dose here. Always get your dose from a doctor or pharmacist and the leaflet inside the pack. General educational information only.
Frequently asked questions
When do I inject lispro?
Shortly before a meal (or as your doctor advises), because it starts working quickly.
Is lispro the same as aspart?
Both are rapid mealtime insulins that work in a similar way, but do not switch without your doctor.
What if I skip a meal?
Usually skip that mealtime dose — ask your doctor for your plan.
Explore more
Sources & further reading
- World Health Organization (WHO)
- MedlinePlus — U.S. National Library of Medicine
- Ministry of Health & Family Welfare, India
- Indian Council of Medical Research (ICMR)
Reviewed by Dr. Sanjay Anbu, MBBS. MedDroid is an AI medical assistant and can make mistakes. It provides general health information, not a diagnosis or medical advice — always consult a qualified clinician. In an emergency, contact your local emergency number immediately.