Fiasp FlexTouch Pens 100 Units / mL


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Fiasp FlexTouch Pens (100 units/mL) is a fast-acting type of insulin (insulin aspart) used by adults and children with type 1 or type 2 diabetes. It effectively manages blood glucose (sugar) levels and avoids developing any severe complications.

The Fiasp formulation contains Vitamin B3 (niacinamide) and L-arginine to stabilize the formulation. The type of medication Fiasp produces is called insulin aspart.

It is taken to replace the insulin that is not sufficiently produced by the body and helps properly deliver glucose into cells.

Typically it is prescribed by doctors along with long-acting insulin types and other diabetes medications.

Fiasp insulin should be used as part of a treatment program that should incorporate a proper diet, regular exercise, and weight loss as instructed by your doctor.

By taking Fiasp insulin as part of your diabetes treatment, it may help create a healthier lifestyle.

Please do not share your Fiasp FlexTouch Pens, needles, or syringes with other patients as it can lead to the transmission of blood-borne pathogens. Fiasp FlexTouch Pens should be loaded with Fiasp cartridges.

Ensure you are ordering the correct pen, as there are many forms of FlexTouch pens and cartridges on the market.

Fiasp insulin is also available in vials.

Additional information


Low, High

Before Taking Fiasp

Patients must be prescribed Fiasp by their healthcare provider. Please mention any of the below to your healthcare provider at your appointment.

If you have an issue with your adrenal, pituitary, or thyroid gland, your doctor may adjust your insulin dosage.

If you have an infection, are feverish, or have had an operation, you may need more insulin.

You may also need less insulin if you suffer from diarrhea, vomiting, or eating less than usual.

Whenever you exercise more than usual or whenever you want to change your regular diet, please let your doctor know.

Take your insulin as usual if you’re sick. Your insulin need may change while sick.

Going abroad may affect your insulin needs and injection timing if you cross time zones. Speak with your physician before embarking on such a trip.

Whether you are pregnant, planning a pregnancy, or breastfeeding, you should consult your physician.

In case of driving or if you operate machinery, watch for hypoglycemia symptoms. When you are hypoglycemic, you will have a hard time concentrating or reacting. This should be kept in mind in any situation where you may be putting yourself or others at risk.

Ensure your healthcare professional is aware of all the medicines you are taking, including vitamins, minerals, natural supplements, or alternative treatments.

Warnings and Precautions

Do not use this medication if you have hypoglycemia.

Notify your doctor immediately if you have any liver, kidney, or heart problems before beginning your treatment.

Pregnant or breastfeeding women should discuss taking this medication with their physician before starting treatment as the dosage may need to be adjusted.

It would be best if you did not stop taking this medication unless instructed by your doctor.

Excessive alcohol consumption can lead to hypoglycemia.

If you miss a dose of Fiasp FlexTouch, you should check your blood sugar levels to ensure they do not become too high (hyperglycemia).

Any changes to insulin type, manufacturer, strength, method of administration, or dosage may cause a predisposition to hypoglycemia or hyperglycemia. All changes to your insulin regimen should be under medical supervision.

Keep in mind; your doctor has prescribed this insulin because it is likely the ideal medication for your condition, and the benefits far outweigh the risks. Most people do not experience any side effects.


A doctor or nurse should instruct you on properly administering this medication by injecting it under the skin (subcutaneously).

It is usually taken either 15 minutes before mealtime or 20 minutes after starting your meal (similar to Apidra). It’s essential to regularly monitor your blood sugar levels and keep track of your results to share this information with your physician to prescribe the ideal dosage.

After 10-20 minutes of injection, it will lower blood sugar levels and last up to 3-5 hours. Ask your doctor about when and where to inject your insulin medication for it to provide optimal effectiveness.

Rotate injection sites to avoid developing hard lumps (lipodystrophy) to a particular area of the body.

Side Effects

Hypoglycemia (low blood sugar) is the most common side effect associated with using Fiasp insulin. To prevent this, it’s essential to consistently administer the correct dosage as advised by your doctor, take the medication with meals and monitor blood sugar levels regularly.

Other common side effects include: allergic reactions at injection sites such as itching, swelling, redness, skin thickening, or hard lumps (lipodystrophy), weight gain, dizziness, trouble breathing, muscle cramps and weakness.

Side effects typically go away as your body adjusts and do not require medical attention. If you are concerned about any side effects, then you should consult with your doctor.

If you are experiencing any symptoms of hypoglycemia such as tremors, weakness, anxiety, cool pale skin, cold sweats, you should carry sugary food such as candy or fruit juice.

If you notice any other side effects that are not listed above, contact your doctor or pharmacist.

Allergic Reactions

In Fiasp, insulin aspart acts as the active ingredient. The non-medicinal ingredients are arginine (as L-arginine HCl), disodium phosphate dihydrate, glycerol, metacresol, niacinamide (vitamin B3), phenol, water for injections, and zinc (as zinc acetate). You can adjust the pH by adding hydrochloric acid and sodium hydroxide.

Fiasp should not be used if you have a severe allergic reaction to the insulin or any of the ingredients in Fiasp. Consult your doctor immediately if you experience an allergic reaction.

A severe allergic reaction may have the following symptoms: local reactions (e.g., rashes, redness, itching) spreading to other parts of your body, feeling unwell with fever, becoming sick with vomiting, having difficulty breathing, experiencing rapid heartbeats, or feeling dizzy.

Missed Dose

Hyperglycemia occurs when you don’t inject enough insulin or miss a Fiasp dosage. Keep an eye on your blood sugar regularly.

Never take a double dose of medication if you forgot to take it.


Hypoglycemia is caused by low blood sugar and can be caused by adminstrating too much insulin, eating too little or missing a meal, exercising more than usual, or drinking too much alcohol.

Hypoglycemia symptoms include: cold sweat; pale skin; headache; slurred speech; fast heartbeat; feeling sick; feeling very hungry; temporary vision changes; drowsiness; unusual fatigue; nervousness; feeling anxious; feeling confused; and difficulty concentrating.

Then, eat some glucose tablets or a sugary snack (sweets, biscuits, juice) and then rest. Don’t take any insulin if you feel hypoglycemia coming on. Try to measure your blood sugar if possible, and rest. It may be necessary for you to measure your blood sugar more than once. Until your blood sugar level has stabilized or the signs of too low blood sugar have passed, relax. Continue taking your insulin as you would normally.

Hypoglycemia can permanently damage the brain and even result in death if not treated. Consult your doctor if you get a lot of hypoglycemias or if hypoglycemia makes you pass out. Adjustments may be needed to your insulin dosage, the amount of food you eat, or the amount of exercise you do.

If you pass out (become unconscious), tell your family, friends, and close colleagues that you need to be turned on your side as soon as possible. As you might choke if you eat or drink anything, they must not give you anything.


Unopened containers should be stored in the refrigerator. Do not freeze or use if the insulin has previously been frozen.

Not in use (unopened): If unopened, Fiasp FlexTouch should be stored in a refrigerator (36°F to 46°F [2°C to 8°C]) until the expiration date. If unopened but improperly stored outside of refrigerated conditions, begin in-use storage for a maximum of 4 weeks.1

In use (opened): After first use, Fiasp FlexTouch can be stored at room temperature (below 86°F [30°C]) or in the refrigerator (36°F to 46°F [2°C to 8°C]) without the needle attached for a maximum of 4 weeks (28 days).1

Keep insulin away from light or heat. Throw away any part if not used after 28 days after opening.

Keep all medication in a safe place and away from children or pets.

When discarding medication, do not throw down wastewater.

Speak to your pharmacist about the best way to throw out your drugs.

Do not use this medication if it is no longer clear and colorless or contains particles.