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Answers to common questions about Fiasp®

Get answers to your questions about Fiasp®, the FlexTouch® pen, PenFill®, pump therapy, and other topics.

About Fiasp®

Fiasp® is an injectable prescription mealtime insulin used to help improve blood sugar in adults and children with diabetes.



Fee-asp is the correct pronunciation of Fiasp®.

Fiasp® is a formulation of insulin aspart—the same active ingredient in NovoLog® that is proven to help control blood sugar in adults and children with diabetes at mealtimes. A form of vitamin B3 (niacinamide) was added to create Fiasp®, which speeds up how fast your body absorbs your Fiasp® dose to keep your insulin level stable.

Yes, Fiasp® is indicated for use in children with diabetes to help improve blood sugar.

You can take Fiasp® at the start of the meal or 20 minutes after starting a meal. NovoLog® is taken 5 to 10 minutes before a meal.

Your health care provider will let you know which time is right for you to take your insulin. Do not make any changes to your dose or the type of insulin you use unless you are told to do so by your health care provider.

Fiasp® is taken by injection at the start of the meal or 20 minutes after starting a meal. Your health care provider will tell you how to take Fiasp® based on your individual needs. If you think you need to adjust your insulin dose because of illness, new medicine, stress, change in diet, or change in activity level, make sure to talk to your health care provider.

Do not make any changes to your dose or the type of insulin you use unless you are told to do so by your health care provider.

The most common side effect of Fiasp® is low blood sugar. Some signs and symptoms of low blood sugar include anxiety, irritability, mood changes, dizziness, sweating, confusion, and headache. Severe low blood sugar can be life-threatening. For a list of possible side effects, please see the full Important Safety Information.

Do not drive or operate heavy machinery until you know how Fiasp® affects you. Do not drink alcohol or use prescription or over-the-counter medicines that contain alcohol.

About taking Fiasp®

Fiasp® comes in:

  • 10-mL vials (small bottles) for use with a syringe or a pumpa
  • 3-mL Fiasp® FlexTouch®
  • 3-mL PenFill® cartridges for use with some Novo Nordisk insulin delivery devices and NovoFine® disposable needles.b The cartridge can be used with NovoPen Echo®, which offers half-unit dosing and a memory function

aRefer to the insulin infusion pump user manual to see if Fiasp® can be used. Use in accordance with the insulin pump’s instructions for use.
bNeedles are sold separately, will need a prescription, and need to be processed by a pharmacist.

Fiasp® FlexTouch® is the latest prefilled insulin device from Novo Nordisk. The Fiasp® FlexTouch® pen has been designed with no push-button extension and offers a click that you may hear or feel when your dose is delivered.c

cAfter dose counter has returned to 0, keep needle in skin for 6 seconds before the needle is removed. If you do not, you may not have received your full dose and you should check your blood sugar levels more often because you may need more insulin. You may or may not hear an audible click at end of dose.

While you don’t need to use a new pen for every dose, you should always use a new needle to help ensure sterility and prevent blocked needles. Do not store the pen with the needle attached. Storing without the needle attached helps prevent leaking, blocking of the needle, and air from entering the pen. Do not share your pen with other people even if the needle has been changed. You may give other people a serious infection or get a serious infection from them. See the full Instructions For Use.

If you select the wrong dose, you can turn the dose selector forward or backward to the correct dose.

Fiasp® pens are designed to work with all Novo Nordisk needles—NovoFine® Autocover®, NovoFine® Plus, NovoFine®, and NovoTwist®.

Unopened pens, PenFill® cartridges, and vials that have been refrigerated (36°F to 46°F/2°C to 8°C) can be kept until expiration date.

Unopened pens, PenFill® cartridges, and vials at room temperature (below 86°F/30°C) can be kept for 28 days.

Opened pens and vials that have been kept at room temperature or refrigerated will last for 28 days.d

dPenFill® cartridges in use (opened) must NOT be stored in the refrigerator.

Do not recap the needle. Recapping can lead to a needle stick injury. Remove the needle from the Fiasp® FlexTouch® after each injection and dispose of it in an FDA-cleared sharps container. Storing the pen without the needle attached helps prevent leaking, blocking of the needle, and air from entering the pen.

If you do not have a sharps container, carefully slip the needle into the outer needle cap. Safely remove the needle and throw it away as soon as you can.

Put used Fiasp® FlexTouch®, PenFill® cartridges, and needles in an FDA-cleared sharps disposal container immediately after use.

Do not throw away (dispose of) loose needles, pens, or PenFill® cartridges in your household trash.

If you do not have an FDA-cleared sharps disposal container, you may use a household container made of heavy-duty plastic (like a detergent bottle).

Visit NovoCare.com to find out how to request a sharps disposal container.

The Fiasp® FlexTouch® has a red push button and cartridge to differentiate it from other FlexTouch® pens. Always check the insulin label before each injection to avoid accidental mix-ups between different insulin products.

Yes, Fiasp® is approved for use in a pump for adults and children with diabetes.

Fiasp® is approved to be used in a pump! An insulin pump is a small, programmable, battery-operated device that delivers a steady, measured amount of insulin under your skin.

Fiasp® in an insulin pump offers:

  • Heat stability at normal body temperatures (up to 98.6°F)
  • Storage in the pump reservoir for up to 6 days before being changed

The pump releases a steady dose of Fiasp® throughout the day and mealtime doses when you eat. You just program the pump, following your doctor's and the pump maker’s instructions. See the Prescribing Information for instructions on how to use Fiasp® in an insulin pump.

Fiasp® should not be mixed with other insulins when it is used in the pump. Fiasp® should not be kept in the pump for more than 6 days of use, nor should it be in temperatures higher than 98.6°F (37°C). The infusion set and the infusion set insertion site should be changed at least every 3 days.

Fiasp® is cleared for use in the Omnipod DASH® System. Get more information about the Omnipod DASH® Insulin Management System at MyOmnipod.com.

Fiasp® support

Follow us on Facebook, where we share news and information about Fiasp® and the condition it treats. However, social media isn’t a place for us to provide health care advice. If you have questions about your health or Fiasp®, please talk to your health care provider.

Cornerstones4Care® offers bite-sized, everyday lessons on eating better, moving more, and treating diabetes that you can learn in 5 minutes or less. Sign up to receive emails with tips for leading a healthier life and updates about Fiasp®

Sign up today.

Sign up to receive an instant savings card. Eligible commercially insured patients can use it to:

  • Pay as little as $25 per 30-day supply for up to 2 years (maximum savings up to $100 per 30-day supply) when you start Fiasp®
  • Pay as little as $20 per 30-day supply for up to 2 years (maximum savings up to $100 per 30-day supply) for select other Novo Nordisk products

Sign up and save on your NovoPen Echo® by calling 1-888-910-1269. Eligible commercially insured patients may pay as little as $0 for each device (maximum savings of $54 per device).

Fiasp® Selected Important Safety Information

Do not share your Fiasp® with other people, even if the needle has been changed. You may give other people a serious infection, or get a serious infection from them.

Who should not take Fiasp®?

Do not take Fiasp® if:

  • your blood sugar is too low (hypoglycemia) or you are allergic to any of its ingredients.

Before taking Fiasp® tell your health care provider about all your medical conditions including, if you:

  • have kidney or liver problems
  • are pregnant or breastfeeding or plan to become pregnant or breastfeed. It is not known if Fiasp® passes into your breast milk.
  • are taking new prescription or over-the-counter medicines, including supplements.

Talk to your health care provider about low blood sugar and how to manage it.

Fiasp® Indications and Usage

What is Fiasp® (insulin aspart injection) 100 U/mL?

  • Fiasp® is a man-made insulin used to control high blood sugar in adults and children with diabetes mellitus.

Fiasp® Important Safety Information

Do not share your Fiasp® with other people, even if the needle has been changed. You may give other people a serious infection, or get a serious infection from them.

Who should not take Fiasp®?

Do not take Fiasp® if:

  • your blood sugar is too low (hypoglycemia) or you are allergic to any of its ingredients.

Before taking Fiasp® tell your health care provider about all your medical conditions including, if you:

  • have kidney or liver problems
  • are pregnant or breastfeeding or plan to become pregnant or breastfeed. It is not known if Fiasp® passes into your breast milk.
  • are taking new prescription or over-the-counter medicines, including supplements.

Talk to your health care provider about low blood sugar and how to manage it.

How should I take Fiasp®?

  • Read the Instructions for Use and take Fiasp® exactly as your health care provider tells you to.
  • Fiasp® starts acting fast. You should take your dose of Fiasp® at the beginning of the meal or within 20 minutes after starting a meal.
  • Know the type and strength of your insulin. Do not change your insulin type unless your health care provider tells you to. 

Change (rotate) your injection sites within the area you choose with each injection to reduce your risk of getting pits in skin or thickened skin (lipodystrophy) and skin with lumps (localized cutaneous amyloidosis) at the injection sites.

    • Do not use the exact same spot for each injection.
    • Do not inject where the skin has pits, is thickened, or has lumps.
    • Do not inject where the skin is tender, bruised, scaly or hard, or into scars or damaged skin.
  • If you miss a dose of Fiasp® monitor your blood sugar levels to decide if an insulin dose is needed. Continue with your regular dosing schedule at the next meal.
  • Check your blood sugar levels. Ask your health care provider what your blood sugar levels should be and when you should check them.
  • Do not reuse or share your needles with other people. You may give other people a serious infection or get a serious infection from them.

What should I avoid while taking Fiasp®?

  • Do not drive or operate heavy machinery, until you know how Fiasp® affects you.
  • Do not drink alcohol or use medicines that contain alcohol.

What are the possible side effects of Fiasp®?

Serious side effects can lead to death, including:
  • Low blood sugar (hypoglycemia). Some signs and symptoms include: anxiety, irritability, mood changes, dizziness or light-headedness, sweating, confusion, and headache.
  • low potassium in your blood (hypokalemia).
  • serious allergic reactions (whole body reactions). Get emergency medical help right away if you have a rash over your whole body; trouble breathing; a fast heartbeat; swelling of your face, tongue or throat; sweating; extreme drowsiness; dizziness, or confusion.
  • heart failure. Taking certain diabetes pills called TZDs (thiazolidinediones) with Fiasp® may cause heart failure in some people. This can happen even if you have never had heart failure or heart problems before. If you already have heart failure it may get worse while you take TZDs with Fiasp®. Your health care provider should monitor you closely while you are taking TZDs with Fiasp®. Tell your health care provider if you have any new or worse symptoms of heart failure including shortness of breath, swelling of your ankles or feet, or sudden weight gain.

Your insulin dose may need to change because of:

  • weight gain or loss, increased stress, illness, or change in diet or level of physical activity

Common side effects of Fiasp® may include:

  • skin problems such as eczema, rash, itching, redness and swelling of your skin (dermatitis), reactions at the injection site such as itching, rash, skin thickening or pits at the injection site (lipodystrophy), or weight gain.

Please click here for Fiasp® Prescribing Information.



NovoLog® Selected Important Safety Information

Do not share your NovoLog® FlexPen®, NovoLog® FlexTouch®, PenFill® cartridge or PenFill® cartridge compatible insulin delivery device with other people, even if the needle has been changed. You may give other people a serious infection, or get a serious infection from them.

Who should not take NovoLog®?

Do not take NovoLog® if:

  • your blood sugar is too low (hypoglycemia) or you are allergic to any of its ingredients.

How should I take NovoLog®?

  • Read the Instructions for Use and take exactly as directed.
  • NovoLog® is fast-acting. Eat a meal within 5 to 10 minutes after taking it.
  • Know the type and strength of your insulin. Do not change your insulin type unless your health care provider tells you to.
  • Check your blood sugar levels. Ask your health care provider what your blood sugar levels should be and when you should check them.
  • Do not reuse or share your needles with other people. You may give other people a serious infection, or get a serious infection from them.
  • Change (rotate) your injection sites within the area you choose with each injection to reduce your risk of getting lipodystrophy (pits in skin or thickened skin) and localized cutaneous amyloidosis (skin with lumps) at the injection sites.
    • Do not use the exact same spot for each injection.
    • Do not inject where the skin has pits, is thickened, or has lumps.
    • Do not inject where the skin is tender, bruised, scaly or hard, or into scars or damaged skin.

NovoLog® Indications and Usage

What is NovoLog® (insulin aspart injection)?

  • NovoLog® is a man-made insulin used to control high blood sugar in adults and children with diabetes mellitus.

NovoLog® Important Safety Information

Do not share your NovoLog® FlexPen®, NovoLog® FlexTouch®, PenFill® cartridge or PenFill® cartridge compatible insulin delivery device with other people, even if the needle has been changed. You may give other people a serious infection, or get a serious infection from them.

Who should not take NovoLog®?

Do not take NovoLog® if:

  • your blood sugar is too low (hypoglycemia) or you are allergic to any of its ingredients.

Before taking NovoLog®, tell your health care provider about all your medical conditions including, if you are:

  • pregnant, plan to become pregnant, or are breastfeeding.
  • taking new prescription or over-the-counter medicines, including supplements.

Talk to your health care provider about how to manage low blood sugar.

How should I take NovoLog®?

  • Read the Instructions for Use and take exactly as directed.
  • NovoLog® is fast-acting. Eat a meal within 5 to 10 minutes after taking it.
  • Know the type and strength of your insulin. Do not change your insulin type unless your health care provider tells you to.
  • Check your blood sugar levels. Ask your health care provider what your blood sugar levels should be and when you should check them.
  • Do not reuse or share your needles with other people. You may give other people a serious infection, or get a serious infection from them.
  • Change (rotate) your injection sites within the area you choose with each injection to reduce your risk of getting lipodystrophy (pits in skin or thickened skin) and localized cutaneous amyloidosis (skin with lumps) at the injection sites.
    • Do not use the exact same spot for each injection.
    • Do not inject where the skin has pits, is thickened, or has lumps.
    • Do not inject where the skin is tender, bruised, scaly or hard, or into scars or damaged skin.

What should I avoid while taking NovoLog®?

  • Do not drive or operate heavy machinery, until you know how NovoLog® affects you.
  • Do not drink alcohol or use medicines that contain alcohol.

What are the possible side effects of NovoLog®?

Serious side effects can lead to death, including:
Low blood sugar.
 Some signs and symptoms include:

  • anxiety, irritability, mood changes, dizziness, sweating, confusion, and headache.

Your insulin dose may need to change because of:

  • weight gain or loss, increased stress, illness, or change in diet or level of physical activity.

Other common side effects may include: 

  • low potassium in your blood, injection site reactions, itching, rash, serious whole body allergic reactions, skin thickening or pits at the injection site, weight gain, and swelling of your hands and feet and if taken with thiazolidinediones (TZDs) possible heart failure.

Get emergency medical help if you have:

  • trouble breathing, shortness of breath, fast heartbeat, swelling of your face, tongue, or throat, sweating, extreme drowsiness, dizziness, or confusion.

Please click here for NovoLog® Prescribing Information.

Look up your cost and a savings offer at MyFiaspCost.com.

Fiasp® and NovoLog® are prescription medications.

You are encouraged to report negative side effects of prescription drugs to the FDA.
Visit www.fda.gov/medwatch or call 1‑800-FDA-1088.

If you need assistance with prescription costs, help may be available. Visit www.pparx.org or call 1‑888-4PPA-NOW.

Talk to your health care provider about your diabetes management plan, including diet and exercise.