This article introduces the key aspects of using insulin injection pens, including how to store insulin pens and insulin injections, how to choose and use insulin pen needles, when to discard insulin pens and give injections, as well as the specific steps of insulin injection and how to select injection sites.

How to store your insulin pens?

• Unopened pens: Refrigerate (2°C–8°C/36°F–46°F); do not freeze.

• Opened pens: Store at room temperature (<25°C/77°F) for up to 28 days; avoid sunlight/heat/humidity.

• Check expiration date; store upright; travel with a cool bag (no direct contact with ice).

  
  

About insulin pen needles

• Disposable: Use once to avoid infection/pain; discard in a sharps container after use (do not recap).

• Needle choices: 4mm–6mm for most adults (reaches subcutaneous fat); check package integrity before use insulin injection pens.

  
  

How to store your insulin injection?

• Unopened insulin: Refrigerate; opened insulin: room temperature (≤28 days).

• Mix cloudy insulin (e.g., NPH) by rolling the pen; do not shake vigorously.

• Discard insulin if discolored/clumped; keep away from children/pets.

  
  

When to throw away your insulin pens?

• Discard if: expired, stored incorrectly, opened for >28 days, or damaged/leaking.

• Dispose of pens/needles in a sharps container (follow local regulations).

Injection Pen Components

When to give an insulin injection?

• Rapid-acting: 15–30 mins before meals; Short-acting: 30–60 mins before meals.

• Intermediate-acting: 1–2 times/day; Long-acting: Once/day (usually bedtime).

• Inject at the same time daily; do not double dose if missed; check blood sugar before injection.

  
  

How to give an insulin injection (shot)?

Set up your supplies

• Gather pen, new needle, alcohol swab, sharps container; wash hands.

• Attach needle tightly; prime (dial 2 units, press button until insulin drop appears).

  
  

Choose an injection site

• Best sites: Abdomen (≥2 inches from navel), thighs (front/outer), upper arms, buttocks (subcutaneous fat) — this is key to knowing where to inject insulin.

• Rotate sites weekly; avoid red/swollen/scared areas.

  
  

Inject the insulin dose

• Clean site with alcohol (let dry); 4mm/6mm needle: 90° angle (no skin pinch); longer needle: pinch skin, 90° angle.

• Press injection button slowly, hold 10 secs; dispose of needle immediately; press site (do not rub).