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Insulin lispro

Medication rapid-acting insulin diabetes
Aka: Humalog
Brands seen in Singapore: Humalog KwikPen, Humalog Mix25 KwikPen, Humalog Mix50 KwikPen, Humalog Mix 25
Not medical advice. Check with your doctor or pharmacist before you start, stop or change the timing of anything you take.
How to use
What it’s for
Prescribed to control blood sugar levels after each meal
When to take
HealthHub: immediately or 15 minutes before a meal
Take with
Food · HealthHub: alcohol raises low-blood-sugar risk
Pros & cons
Pros
  • HealthHub: rapid-acting, works with each meal
  • HealthHub: can be injected just after a meal if needed
  • FDA label: the pens dial in 1 unit steps
Cons
  • HealthHub: low blood sugar is the main side effect
  • HealthHub: injection-site lumps, dents or bruising
  • HealthHub: discarded 4 weeks after first use
Sources
  1. HSA — Listing of Registered Therapeutic Products (data.gov.sg open dataset, 5,511 rows, cached in full and filtered locally) · read 2026-08-27
    what it says
    “All 4 registered insulin lispro products carry Forensicclassification 'Prescription Only' — SIN13719P HUMALOG KWIKPEN 100 units/ml · SIN11171P HUMALOG MIX25 KWIKPEN · SIN14025P Humalog Mix50 Kwikpen · SIN11227P HUMALOG MIX 25 SUSPENSION FOR INJECTION.”
  2. HealthHub (Singapore) — Insulin Lispro: what is this medication for · read 2026-08-27
    what it says
    “Insulin Lispro is a rapid (fast) acting insulin. It is used to control blood sugar levels after each meal.”
  3. HealthHub — Insulin Lispro: how should I take or use this medication · read 2026-08-27
    what it says
    “Insulin Lispro is given immediately or 15 minutes before a meal as an injection into the fatty tissue that is between the skin and muscle layer … If you need to, you can inject immediately after a meal instead.”
  4. HealthHub — Insulin Lispro: common side effects and low blood sugar · read 2026-08-27
    what it says
    “This medication may cause low blood sugar (hypoglycemia). Symptoms of low blood sugar include: Weakness; Dizziness; Hunger; Sweating; Trembling; Blurred vision; Walking unsteadily; Fast heartbeat … Drink alcohol on an empty stomach while injecting insulin”
  5. HealthHub — Insulin Lispro: injection-site reactions · read 2026-08-27
    what it says
    “Some patients may also experience mild pain, redness, bruising, swelling, a small lump or dent of the skin at the injection site … They also usually go away in a few days to a few weeks.”
  6. HealthHub — Insulin Lispro: how should I store this medication · read 2026-08-27
    what it says
    “Store all unopened insulin in a refrigerator between 2 to 8 degrees Celsius. Do not freeze … Once the insulin has been first used, do not refrigerate … Discard the insulin 4 weeks after opening.”
  7. HealthHub — Insulin Lispro: what precautions should I take · read 2026-08-27
    what it says
    “Are allergic to this medication or any of the other ingredients of this medication; Drink alcohol often; Are eating less than usual due to sickness/a changed diet … Are travelling across different time zones … Are pregnant or breastfeeding”
  8. HealthHub — Insulin Lispro: what food or medication should I avoid · read 2026-08-27
    what it says
    “Avoid taking alcohol with this medication as this may increase your risk of having low blood sugar.”
  9. US FDA label for HUMALOG (insulin lispro), section 2 Dosage and Administration, via openFDA (Eli Lilly, effective 2024-01-24) · read 2026-08-27
    what it says
    “The dosage of HUMALOG must be individualized based on the route of administration and the individual's metabolic needs, blood glucose monitoring results and glycemic control goal.”
  10. US FDA label for HUMALOG, section 2.3 Dosing Information (pen delivery limits), via openFDA · read 2026-08-27
    what it says
    “The HUMALOG U-100 KwikPen, HUMALOG U-100 Tempo Pen and HUMALOG U-200 KwikPen each dial in 1 unit increments and delivers a maximum dose of 60 units per injection. The HUMALOG U-100 Junior KwikPen dials in 0.5 unit increments”
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Updated 2026-08-29. Every line above traces to a numbered source. Kozen-X is not a medical device and does not give medical advice. It lists what published sources have written down — nothing more. A pair not listed is unrecorded, not cleared. Before you start, stop or re-time anything, talk to your doctor or pharmacist.