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Insulin aspart User Reviews & Ratings

Brand names: Novolog, Fiasp, NovoLog FlexPen, ReliOn NovoLog, NovoLog PenFill

Insulin aspart has an average rating of 5.6 out of 10 from a total of 47 reviews on Drugs.com. 37% of reviewers reported a positive experience, while 37% reported a negative experience.

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Reviews for Insulin aspart

  • Anonymous
  • August 5, 2011

Novolog (insulin aspart) for Diabetes, Type 2 "After trying several types of insulin medications, which caused severe itching, I was put on Novolog 70/30. At first, there were no side effects, then dizziness started to occur, and it's getting worse. My ankles are starting to swell, and I am putting on weight. I'm at my wit's end. Novolog is very convenient to use, but unfortunately, now I have to go back to the doctor and start a new medication and go through trial and error with a new medication, which can also be very costly."

3 / 10
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38 Report
  • MAR...
  • Taken for 1 to 2 years
  • April 17, 2020

Novolog (insulin aspart) for Diabetes, Type 2 "I put on a lot of weight with this Novolog insulin. No diet changes, but gained 60 lbs in a year. I was taking 15 units 3 times a day. I kept hearing, 'Hang in there.' 'Give it time to adjust to your body.' So now, my blood sugars are worse thanks to the extra weight, thanks to the Novolog FlexPen. I also experienced not urinating enough and ankle swelling. Probably because this stuff won't let you urinate. Did it lower my blood sugar? Of course! It's insulin. But at the cost of putting on 60 lbs? Not worth it. I finally stopped it even though my idiot doctor disagreed. Yeah, Doc, I'll keep taking it until I can't fit out of my doorway. Ridiculous! I worked hard to lose 60 lbs."

1 / 10
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15 Report
  • Pai...
  • Taken for 1 to 6 months
  • July 6, 2021

Novolog (insulin aspart) for Diabetes, Type 2 "On a bolus regimen (rapid + long-acting) since early 2021 and developed painful neuropathy in thighs/legs that is worsening to the point of insomnia. The sharp pain sensations feel like sewing needles. The doctor didn't know the cause and wants to test the thyroid, which was negative when hospitalized for DKA. It is always best to read the package insert from the manufacturer because it contains more detail. I learned all insulin products reduce potassium levels (low K can cause muscle cramps, burning, even death), and rapid glycemic control is 'associated with' transitory eye refractive disorder, worsening retinopathy, and 'acute painful peripheral neuropathy'. This has another name: Treatment-Induced Diabetic Neuropathy. I believe PN becomes chronic once it starts as long as you're using Novolog."

1 / 10
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11 Report

Frequently asked questions

  • Dor...
  • Taken for 1 to 2 years
  • January 2, 2021

Fiasp (insulin aspart) for Diabetes, Type 1 "I switched from Aphidra to Fiasp because both my primary and secondary insurance stopped covering it. I was using the Omnipod pump, and the Fiasp worked well with it. My endocrinologist suggested I go to the T-Slim Tandem pump that communicates with the Dexcom G6 sensor system. Fiasp does not work well with that system, it tends to clog the tubing."

5 / 10
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9 Report
  • Sca...
  • February 20, 2010

Novolog (insulin aspart) for Diabetes, Type 1 "Novolog works very well and very fast (3-5 hours) in lowering sugar levels, but for those without insurance, be wary. Novolog is very expensive, especially when you have to couple the insulin with another slow-acting one, such as Lantus. Together, these are very effective, however."

8 / 10
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23 Report

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  • Het...
  • January 9, 2021

Novolog (insulin aspart) for Diabetes, Type 1 "This insulin is terrible. My boyfriend almost died today because he took the normal amount of insulin and it was too much for his body and his sugar dropped to 26. When your sugar is that low it can cause fatal symptoms including passing out, disorientation, memory loss, seizures and even death. My boyfriend ending up an hour away in the middle of nowhere and he was lost. He was passed out and almost died it was lucky his parents found him. SWITCH brands this insulin is too strong and has too many side effects. My bf got lucky today maybe he won’t next time...."

1 / 10
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8 Report
  • Mae...
  • Taken for 10 years or more
  • June 18, 2015

Novolog (insulin aspart) for Diabetes, Type 1 "I was put on Novolog when I was diagnosed with Type 1 and have loved it ever since. I've never had any negative side effects, and when coupled with the Omnipod, it is phenomenal for me. It is important to note, however, that every person's body is different. My doctor recently had me try Humalog, to which I had multiple negative side effects. This does not mean one is better than the other, just that for my own body, the Novolog happens to be what it accepts and works with best. You should always tell your doctor how ANY medication makes you feel if you experience negative side effects. For me, the Novolog is a godsend, and I love it :)"

10 / 10
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14 Report
  • 5Do...
  • Taken for 5 to 10 years
  • April 29, 2015

Novolog (insulin aspart) for Diabetes, Type 2 "Have used Novolog for 9-10 years. It has reasonably helped with controlling my glucose but has caused considerable weight gain. My units are determined by the carbohydrate count per meal - that has been adjusted from a ratio of 10 to a ratio of 7 per unit. A new endocrinologist has suggested Januvia, but the side effects sound horrendous. The other 5 oral medications I've tried over a period of years did nothing positive and actually caused too many gastrointestinal problems. Will decide in 3 months, at the next appointment."

7 / 10
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12 Report
  • Joh...
  • Taken for 2 to 5 years
  • November 1, 2022

Novolog (insulin aspart) for Diabetes, Type 2 "Started on Novolog because Lantus alone didn't keep A1C low enough. it is effective and I have had to rely on it more as my insurance switched me to Basaglar which is less effective than Lantus. Being on two insulins does cause weight gain which only decreases insulin sensitivity. Sort of a losing battle to use more insulin and gain more weight. But that's what happens."

7 / 10
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4 Report
  • Rya...
  • Taken for 2 to 5 years
  • May 12, 2023

Fiasp (insulin aspart) for Diabetes, Type 1 "My insurance doesn’t cover Humalog any longer so I have been using Fiasp for the past 2 years. I am not a fan of this insulin. The injector on the pens often does not work well and the insulin does not lower blood sugars accurately. At least one of the pens in the box are worthless and I end up throwing them away. I end up going through my “monthly” supply twice as fast as I should. I’d go back to Humalog in a heartbeat if I could."

3 / 10
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3 Report
  • Anonymous
  • Taken for 10 years or more
  • September 28, 2021

Novolog (insulin aspart) for Diabetes, Type 1 "Any fast acting pen that fails to act even one time is a total loss. This Novolog pen fails to inject sometimes. So I rate it 1/10. What happens is: you put the flex pen on and click it into place, and then whatever amount you dial does NOT infuse after injection. So even though it works well when it works, not working even once when you absolutely need it makes it a terrible device."

1 / 10
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5 Report
  • Ros...
  • Taken for 1 to 6 months
  • August 25, 2015

NovoLog FlexPen (insulin aspart) for Diabetes, Type 2 "I was switched from Humalog Flex insulin to NovoLog FlexPen, and I've noticed that since then I have gained 21 pounds. I'm trying my best, exercising, eating right. I'll lose a pound and gain 3. I need help, what should I do?"

10 / 10
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11 Report
  • Anonymous
  • Taken for less than 1 month
  • August 21, 2019

Novolog (insulin aspart) for Diabetes, Type 2 "Started novalog on Friday. Amazing bloodsugar control. However by Monday I was in the er with chest pains and shortness of breath. Hospital said this medicine caused it. Then I look on their site and it says it right on side effect list. Will never take it again!!!!"

3 / 10
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7 Report
  • Sti...
  • Taken for 2 to 5 years
  • July 25, 2019

Novolog (insulin aspart) for Diabetes, Type 2 "I take a combination of Novolog R and N. It has worked just as well as the High dollar medications that I had taken in the past. I was taking some high dollar medications and always ran through my insurance coverage after 6 months. After moving back to Kansas from Missouri my specialist here changed me to the Novolog regimen which is all out of pocket but cheaper than 6 month of out of coverage for the high dollar medication."

10 / 10
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6 Report
  • CCC...
  • Taken for 2 to 5 years
  • October 3, 2023

Fiasp (insulin aspart) for Diabetes, Type 1 "Been using Fiasp for 4 years...in tandem with Tresiba (long-acting). This combination seems to work best at keeping me in or reasonably close to my target range. I use the cartridge Fiasp dosing with a permanent pen called 'InPen'. I know Novo Nordisk keeps saying it makes a permanent pen, but have yet to see one available in the US. This process of dosing as needed with Fiasp, having auto recording and tracking of both short and long-acting insulin, auto calculation of on-board insulin is exactly what I needed. I can still enjoy my life, exercise, or just eat anything and keep it all working relatively easily. PS, my insurance killed Fiasp from their formulary, but my Endo was able to argue an exception was needed for my coverage...good doc.!"

10 / 10
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2 Report
  • Joh...
  • May 2, 2019

Novolog (insulin aspart) for Diabetes, Type 2 "Been on Novolog a month, also using Basaglar 30 units a day and Metformin ER. A1c too high at 9.1 so doctor told me I needed to try short acting insulin. Costs is high one pen as $107 I pay $325 for 5 Basaglar pens. Seems like this disease is making drug companies wealthy. I do see improvement when using the Novolog when I take it at big meal when carb intake higher. Has improved fasting levels. But the cost will prevent me from sticking with it. Insurance pays some I hope but I went off Lantus because of costs. I think Lantus worked better then Basaglar but that's just my own observation and experience. I've tried Januvia, Starlix, Victoza, and none really work consistently even being on a low carb diet. Besides the insulin is affecting my weight in a negative way which can't be good for insulin resistance. After awhile the injected insulin probably also become resistant to cell intake. So then you take more and more. Yeah a expensive band aid for a disease that fights back."

7 / 10
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6 Report
  • Dia...
  • Taken for 1 to 2 years
  • January 7, 2014

Novolog (insulin aspart) for Diabetes, Type 2 "Good for lowering blood sugar and quick but the side effects were bad, it caused severe itching and a bad rash running down both of the inside of my legs. Heading in to get it changed to something new."

7 / 10
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9 Report
  • Sco...
  • Taken for 2 to 5 years
  • January 6, 2020

Novolog (insulin aspart) for Diabetes, Type 2 "I assume the Novolog insulin is doing what it is designed to do, my complaint is with the delivery pen!!! It gets stuck and will not plunge thereby leaving the insulin unusable. Humalog has a better pen!!!!!"

8 / 10
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5 Report
  • Ill...
  • Taken for 2 to 5 years
  • February 21, 2023

Novolog (insulin aspart) for Diabetes, Type 2 "Been on Novolog about three years now. Take it at meals mostly lunch and dinner. Also take Basaglar too. Biggest complaint with Novolog is slow reaction time which allows my carbs to raise BGL too high. If I take more it just drops me to low later. Much more difficult to judge dosing giving that I am type 2 and my own insulin works some days better than others. I have basically accepted the spikes as my fasting level overnight is good. Personally, I think if the Basaglar worked better it would help balance out my numbers better."

6 / 10
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2 Report
  • Jam...
  • Taken for 1 to 6 months
  • April 8, 2023

Novolog (insulin aspart) for Diabetes, Type 1 "Been on Humalog for 6 years. My A1c just kept getting worse. Finally, I found a doctor that listened and put me on Novolog and now my A1c is going down. If only my original doctor had prescription me Novolog 6 years ago, I probably wouldn't be so messed up, fat, and amputation near."

10 / 10
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2 Report
  • Den...
  • Taken for 6 months to 1 year
  • March 13, 2023

NovoLog FlexPen (insulin aspart) for Diabetes, Type 1 "I am a Type 1 diabetic and this is the worse insulin. My sugar goes up and I take the insulin and my sugar continues to go up. This is not fast acting or even acting and since CVS Caremark won't pay for the insulin (Apidra) that does work for me because they deem it to expensive and won't approve my prior authorization from my doctor I am stuck with this awful insulin."

1 / 10
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2 Report
  • Tru...
  • Taken for 10 years or more
  • September 14, 2021

Novolog (insulin aspart) for Diabetes, Type 1 "I was diagnosed with diabetes in 1994. Began using Novolog. It worked great. Years later, my insurance told me I could no longer use Novolog, it was "premium". I would have to pay 2x as much for it. They told me I had to use Humalog to get the same Rx co-pay. Aren't ins. companies great (for themselves)? I used Humalog for years and it worked well. Lately, in the last two years, my blood sugars (BS) went thru the roof and I had no idea why. On a guess, I doubled my Humalog and my BS came back down. Now, using twice as much each dose, my BS are ok. Recently, I had a chance to use Novolog again. Great!!! No double dose and it starts working 20 minutes faster than Humalog. Lily will no longer be conning me with their prices. I am no longer using their ineffective and overpriced junk. Thanks Novolog. It is good to use an insulin that works."

9 / 10
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3 Report
  • Anonymous
  • Taken for 2 to 5 years
  • August 17, 2016

Novolog (insulin aspart) for Diabetes, Type 2 "Novolog pen does not glide well when giving yourself a shot. The medication worked well for me with minimal side affects. I have been on it for 2 yrs, but my coupon has expired & I cannot afford it now."

8 / 10
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5 Report
  • Hil...
  • Taken for 6 months to 1 year
  • September 4, 2022

Novolog (insulin aspart) for Diabetes, Type 2 "From day 2- diarrhea Heartbeat weird Blood sugar - not much change Maybe down a little Stomach jumpy Dosage- as per blood sugar at mealtimes The pen is like shoving a serrated needle in that sticks. Not smooth or painless. My long acting pen from tresiba is very smooth in comparison. Age-69 Female Not sure of next step, due to the above mentioned sides, hopefully will discuss discontinuing with my diabetic team members, have never met the Endocrinologist…only CRNPs, PA, Nurses, Office Staff. The endo. office still charges bill for a specialist office visit. My opinion, until I am seen by the Specialist, no specialist charge."

2 / 10
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2 Report
  • Jjo...
  • Taken for 6 months to 1 year
  • October 15, 2018

Novolog (insulin aspart) for Diabetes, Type 1 "The insulin works but they leak and come apart inside and are HORRIBLE inaccurate because they leak and get air in them be very careful I rarely use them because of problems. A syringe is way more accurate because they don't fall apart get air in them like the other cheap ones"

1 / 10
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3 Report
Reviews may be edited to correct grammar/spelling or to remove inappropriate language and content. Reviews that appear to be created by parties with a vested interest are not published. This information is not intended to endorse any particular medication. While these reviews may be helpful, they are not a substitute for the expertise, knowledge, and judgement of healthcare professionals.