Heard of Allulose? You should know the facts…

Honestly, who’s fooling who? Did you ever stop a minute and take a look at what the hell you are eating? Do you care? How many of you are reading labels and checking what the ingredients are derived from? Oh, so, a label says ‘maltodextrin’…what do you think? What is that? Just because you may have read it so many times doesn’t make it any safer. You ever wonder why degenerative diseases, obesity, and adrenal-thyroid-hormone imbalances are running rampant. What’s the common denominator? Possibly, our food or lack of nutrients in the food. Just because an ingredient is approved by the FDA or considered, GRAS, which stands for ‘generally recognized as safe,’ sure doesn’t make me feel warm and fuzzy inside!

So, let’s take a look at a relatively new sweetener named Allulose (AKA in science terminology, D-Psicose). It was brought to my attention when I learned some clients were eating bread made with this sweetener and supposedly feeling great that they could finally eat some ‘guilt-free.’ Being the food detective that I am and a natural researcher, I started investigating only to find non-cooperative product customer service, but the truth can’t be hidden for long. Let me empower you with the awareness of this sweetener.

Allulose is absorbed by the body but supposedly not metabolized by the body and has approximately 70% sweetness of sugar but 90% fewer calories. It can be found naturally in raisins, figs, and jackfruit, but this is not what the ingredient in the food products are deriving it from! Take a wild guess what this commercial scale of allulose is derived from? Drumroll, enzymatic conversion of corn. To boot, it states that the allulose syrup is from genetically modified (GMO) corn and therefore contains a very toxic chemical named glyphosate. 

If you want to gain awareness about glyphosate, then sign up for the free educational series at nancyguberti.com/gtest

Here’s some animal research on the sweetener: enlarged kidneys and liver when consuming normal amounts and some fatal reactions with unusually high amounts. For humans, it seems like GI distress, bloating, gas, and general discomfort with the sweet stuff! Do you really believe that something that goes through your system mostly unprocessed is not going to cause gastric distress? Since there are no long-term studies on the physiological effects in humans, the consumer is perhaps being used as a testing lab for this ‘GRAS’ ingredient. The prominent manufacturer is best known for Splenda, but now I see they are cranking out Stevia as well. Maybe there’s hope, time will tell.

You can find the ‘allulose’ ingredient in the following foods, so best to read your labels:

  • Carbonated and non-carbonated beverages
  • Rolls, cake, pie, pastries, biscuits, and frostings
  • Yogurt, both regular and frozen
  • Frozen dairy desserts, including regular ice cream, soft serve, sorbet
  • Salad dressings
  • Jams and jellies
  • Chewing gum
  • Hard and soft candies
  • Sweet sauces and syrups
  • Gelatins, puddings, and fillings
  • Fat-based cream used in modified fat/calorie cookies, cakes and pastries
  • Medical foods
  • Coffee mix

It’s in the following brands:

  • Beyond Cereal Protein Bars, by QuestNutrition
  • Bread Products, by Know Better Bread

It goes from bad to worse, the corn may have glyphosate in it, and it seems like the FDA does not have a mandate for food labeling for allulose regarding allergies. The FDA also decided to exclude allulose from the nutritional level concerning the total and added sugar declaration. 

There is no legal definition of the word ‘natural’ on food labels. Companies can say it’s natural because allulose exists as a molecule in wheat, corn, figs, raisins, BUT this is not what is in the products you are eating. You are consuming that genetically modified microbiome corn ingredient. Tate & Lyle manufacture allulose in Tennesee and sell it under the Dolcia Prima brand. Other companies selling allulose are Matsutani & Ingredon under the Astraea brand and Cj Cheiljedang & Anderson Global Group under the AllSweet brand.

What about the health ramifications and glucose intolerance mediated by changes in your gut flora? Another major reason to take quality probiotic supplementation daily.

Do me a favor, and let me know if you get severe GI issues eating it. I’d also like to know how much of it can you tolerant before you do get bloated and gassy. Sound like a fun challenge? I’d start a food journal and keep track if you lose or gain weight after consuming it long-term.

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Animal Research Sources:

1. The Study on Long-Term Toxicity of D-Psicose in Rats – Yagi, Matsuo – Journal of Clinical Biochemistry & Nutrition, Nov 2009

2. Effects of oral acute administration and subchronic feeding of several levels of D-psicose in rats, Matsuo et al., Journal of Nutritional Science and Vitaminology, 2002

Here’s the reason why companies are using Allulose. This article states that consumers have not thrown the red flags about allulose yet! https://www.foodnavigator-usa.com/Article/2019/05/13/Tate-Lyle-talks-allulose-The-first-two-things-consumers-look-for-on-the-Nutrition-Facts-panel-now-are-calories-and-sugar

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Leave A Reply (26 comments So Far)


  1. Nymbus
    2 years ago

    Omg my sister made some food with this in it and I had an immediate reaction. Within an hour I had explosive diarrhea and very painful stomach cramps. I was sick for a week. She said she used a tiny amount and that she eats it all the time with no symptoms. Bleh.


  2. Liza M. Shaw
    2 years ago

    I ate a cookie made with it tonight and about twenty minutes later my entire upper body felt like it was on fire! And my face and torso lit up, bright red, as though I’d had a second degree sunburn! I didn’t have any GI distress, but I am obviously allergic to it, or something else in the cookies. The redness died back after I took two benedryl. Oh well… I was hoping these would be the rare treat I could eat while maintaining a ketogenic diet.


  3. Tammy Arnzen
    2 years ago

    I have been buying the quest bars and using the quest protein shakes, and noticed within a few minutes after consuming them, I’ve had stomach aches, and bloating. I have since stopped using them, and I have no abnormal issues.


  4. Kay
    2 years ago

    I ate some in homemade ice cream last night for the first time. I didn’t have any digestive problems but my throat had symptoms and it became more difficult to swallow. I woke up with swollen eyes and thick mucous in my throat. I’m obviously allergic to it. Its supposed to be good for sugar free ice cream and keeps it scoopable and soft. I won’t be using it again.


  5. Monique
    2 years ago

    I started the Keto way on July 1st and have been searching for snacks and foods that are keto friendly. I am slowly getting used things on this lifestyle change and was excited at the idea of a BIG cookie from KNOW that claimed a 4g net carb and high fat. They taste great! However I am now realizing the correlation to the cookie and feel ill and bloated almost immediately after eating it. Started looking into this further and now believe the Allulose is to blame. So disappointing but well noted to avoid these cookies and the ingredient going forward.


    • Nancy Guberti
      2 years ago

      Congrats to starting Keto and that you were able to see the pattern to the bloating and the cookie. This is why I recommend keeping a food journal so you can become your best health advocate and understand your biomedical functioning correlation to foods. Keep up the great work committing to your optimal health.


  6. Kathy
    2 years ago

    First time user, never again. I made some keto cookies with Allulose and 2 hours later I feel very nauseous & bloated, like there’s a rock in my stomach. It feels as if I ate poison.


  7. Maha Aldoori
    2 years ago

    Trying to find more research on Allulose and landed here. I bought some to try out today in scones and jam. The taste was fine and no digestive issues. My son ate both and had no problems at all. However, I feel like it might have spiked my insulin because I’m so sleepy this afternoon, and I had a good night’s sleep and coffee at lunch, and I used to feel this way before going Keto/lchf. I also feel like it’s given me a headache without the pain and a bit of brain fog, if that makes sense. I was hoping this sweetener would be good to have an occasional dessert, but it really feels like I ate regular sugar. I also ate it after fasting for 25 hours, so I don’t know if that would alter how I feel. I wouldn’t think so. I might try one more time, or I just might stick to fruit for occasional treats.


  8. Tina Sachau
    2 years ago

    I ate a salted caramel Quest Hero bar at about 3:30 pm yesterday. I started getting gas before bed. I couldn’t sleep because the gas was uncomfortable. I had weird and extremely busy thoughts that buzzed through my brain at high speeds. I kept flatulating horrible smelling gas all through the night. Won’t eat it again.


  9. Terri Hampton
    2 years ago

    You are the only one reporting gastrointestinal issues with allulose that I can find. I started eating cookies from the KNOW brand, which are sweetened with allulose. SEVERE diarrhea. If I only eat a half cookie, it’s tolerable. More people need to know this.


  10. dee
    2 years ago

    I have been looking for alternative sweeteners for my diabetic customers and came across Allulose. There isn’t a lot of research available so I thought I’d get samples and give it a try. A little excited until I made a batch of cookies- I always use “lab bunnies’ before putting items on my menu. NOPE won’t be using allulose !!! The brand states non gmo which is good, but oh NO! Tummy troubles immediately with 1 1 1/2 ‘ cookie…There is definitely an issue with this for me and a few of my lab bunnies.


  11. Tracie Vasseur
    1 year ago

    I’ve been eating the hero quest bars in half instead of the whole bar.. still gastrointestinal issues and I did not know what it was coming from until finding this article . Thank you all…


  12. Kelly
    1 year ago

    We have been following Keto for a while, using Erithrytol as a sugar substitute. My husband doesn’t like the cooling effect of Erithrytol so our desserts were switched to use Allulose last week. The diarrhea was the first symptom, then just weird stomach pains, now I’m having a lot of bloat, which I didn’t have before. It’s the only thing I have changed. I noticed the effects rather quickly as well. I don’t think he can tolerate either one as he has been having severe gastric issues. I don’t seem to have any issues with Erithrytol though. No more Allulose for me….


  13. Colette
    1 year ago

    I ate one cookie with allulose in it and had minor stomach issues. The next day I tried another one (just to be sure If it was the allulose or not) and got so sick I couldn’t stop throwing up and had diarrhea for hours. I threw the rest of the cookies away. It honestly felt like I poisoned myself. Uggg… never again!


  14. Amir
    1 year ago

    I was using erythritol a while back and didn’t quite like the aftertaste (though definately not bad). Started using allulose for about 2 weeks now (ice cream, cookies, lemon vars). I love it! it’s not as sweet as sugar, but it tastes practically the same (to me, at least). No one in my family has experienced any GI or other issues. We definately need some blind studies vs sugar and other sweeteners. Anecdotal examples isn’t enough to support (or not) a product.


  15. M Roane
    2 months ago

    I tried allulose in lemonade a few years ago and had horrible gastric discomfort. Unfortunate because it really tasted like sugar.


  16. shelly sparks
    2 months ago

    I’ve recently been eating snacks with allulose, stevia, and erythritol, which are new for me. I’ve developed per-oral dermatitis and I’m wondering if there is a connection. Anyone else with a skin condition? I’m also very allergic to ragweed, which correlates with the stevia.


  17. dgillam
    2 months ago

    I started low carb dieting a few weeks ago. I wasn’t losing weight like I have in the past so I started looking at my sweeteners. This time I had been using Splenda in my morning coffee, and in researching I read that it can have higher carb fillers, so based on some online reviews I ordered Allulose. This morning I put two spoonfuls of Allulose in my coffee. I didn’t have any pain or cramps at all, but upon waiting for my usual post coffee trip to the bathroom I suddenly felt a definite urgency. I made it to the restroom in time as I was at home, but if I had been out and about this could have easily been a full “blown” emergency. Had to go a few more times before I felt I could leave the house safely. I will not be using this again and I now have almost an entire 32 oz bag I can hopefully give to a low-carb friend who already knows its okay for them, because it’s definitely not okay for me.


  18. Cady
    1 month ago

    In so much pain right now… made homemade apple sauce, skin on, so lots of fiber already. Then added allulose for sweetness…. never again. Seering stomach pain. Limited sites are mentioning this and it makes me think the marketing campaign by manufactures of this product is behind the endless articles in women’s magazines etc on the topic.


  19. Erin
    1 month ago

    I used allulose last night as a substitute for simple syrup in a margarita. Within an hour I felt nauseous and bloated and generally awful. Spent half the night on the toilet and it’s been over 12 hours, still feeling off and having some issues with bloating and diarrhea. Never using that stuff again, just mad I spent $7 on it.


  20. Lauren
    3 weeks ago

    Hi I just found your blog and wanted to respond as I am someone who has severe constipation and bloating occasionally. I tried a product with this as one of the main ingredients, I was sick all night with terrible gas and diarrhea. I thought maybe it was a fluke so I waited a few days tried it again , same thing happened. This sweetener is too good to be true. Maybe some people will not have any effects but I am a picky eater who eats very healthy and this did not sit right with me and got me so sick. I will never eat anything with this again I just wanted to let other people know what happened to me unfortunately.


    • Nancy Guberti
      3 weeks ago

      Thank you Lauren for sharing your experience and glad you discovered it was the allulose. Be safe and healthy.


  21. Asia
    2 weeks ago

    I had allulose for the first time today. I had several keto cookies made with it. Took a few hours but now I’ve got serious gurgling gut and diarrhea. Apparently this is not the sweetener for me! Bummer because it did taste really great.


    • Nancy Guberti
      2 weeks ago

      Thanks for sharing your experience. It’s horrible that so many are experiencing these side effects. Here’s a YouTube video about allulose: https://youtu.be/3PvP4qT3WrU


  22. Craig
    1 week ago

    Well, I’m glad it’s not Covid, but-
    Found your blog after questioning what caused my sudden and repetitive bouts with explosive diarrhea, and lo and behold, looks like it was the Wholesome Allulose I bought a month ago at Costco.
    I had a couple pumps in a big glass of iced coffee for the first time today, and I didn’t last long after the drink was consumed.
    I will be returning the other container, and writing the Wholesome folks that Allulose is anything but Wholesome.
    Thank you for the concise information.


  23. Brianna
    1 week ago

    A new Brand id ice cream is producing “ZoCal” and it comes in pints (uses Allulose). I really wished I had researched before consuming that pint feeling guilt free. I immediately had SEVERE diarrhea and it lasted all night long. Never again!!