What Kind of Oat Bran is Used in the Dukan Diet?

Dr Dukan recommends a very specific oat bran for his Dukan diet – M2bisB6 grade bran, which has been milled to just the right size and then sifted to remove the  flour and as soon as possible, this special grade of oat bran will be made available in the US for purchase from his website.

But what oat bran does Dr Dukan recommend when his ideal oat bran isn’t available.  His site www.dukandiet.com recommends that “you use other US brands of oat bran”  The only other stipulation is that “the contents of the box say 100% oat bran (and not steel cut or rolled oats)”.

My take on this information is that you can use any brand of oat bran whilst following the Dukan Diet although Dr Dukan would of course prefer you to use his “exceptional type of oat bran” as this will provide the optimum results.  If you were like me and you thought oat bran was oat bran let me explain why this isn’t the case.

The first variable in oat bran is the milling or grinding of the grain.  There are three main grinds fine(3), medium(2) and coarse(1) and two ways of carrying out these grinds,  simple and bis.  This means that the oat can be ground into 6 different sizes and Dr Dukan considers medium(2) bis to provide the optimum size.  Size matters because over grinding reduces effectiveness of the oat bran and insufficent grinding doesn’t produce optimum viscosity.

The second variable is the sifting or sieving of the ground oats.  This sifting separates the flour from the bran and insufficent sifting leaves too much flour in the bran which reduces the effectiveness of the bran to help asborb fat, reduce cholesterol and combat constipation.  Dr Dukan recommends 6 siftings to produce a very pure oat bran.

So Dr Dukan recommends oat bran which has been milled medium bis and sifted 6 times, or that is M2bis-B6 grade.  Dr Dukan or Regime Dukan (the Dukan Diet in French) has recently registered the trademark M2bisB6 for their use and it is registered to them until 2 December 2020.

If you are looking for some ideas on how to use oat bran in the Attack Phase of the Dukan Diet take a look at my post “How can I eat oat bran on the Dukan Diet”.


77 Responses to “What Kind of Oat Bran is Used in the Dukan Diet?”

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  • sharon on May 19, 2014

    can i use quaker – oat bran

    • Amber on May 19, 2014

      Hi Sharon

      Yes you can use oat bran from Quaker

      Best wishes


  • mera on May 19, 2014

    hi, what would be a good breafast to start on the very
    first day of the dukan. thanks

    • Amber on May 19, 2014

      Hi Mera

      I’d probably start with an omelette followed by a yogurt but the great thing about the Dukan is that you chose what you eat.

      Best wishes


    • mera on June 6, 2014

      Hi, Amber!!

      2 weeks on cruise phase…..very happy so far……
      ..but,,,PLS PLS need some help,
      sorry its sounds gross but i NEED to go to the bathroom,
      Tried everything but nothing works for me,


      • Amber on June 6, 2014

        Hi Mera

        If you’ve tried everything in this post I’d recommend a visit to the pharmacist to ask for a natural laxative. http://thedukandietsite.com/1701/treating-constipation-on-the-dukan-diet/

        Although it is not recommended by Dr Dukan many people who have contacted me have used psyllium husks to provide additional fiber in their diet without any adverse effect on their weight loss.

        Best wishes


  • Nermin on November 6, 2013

    Hi Amber,

    I’m Nermin from Egypt, I read in your previous comments that using oat bran is not mandatory if it’s not available, but in Dr. Dukan’s book it’s stated that in the Stabilization Phase 3 rules have to be followed one of them is to take 3 tablespoons of oat bran a day, so how can we follow the rule while Dr Dukan does not provide any substitutes for oat bran?


    • Amber on November 6, 2013

      Hi Nermin

      It is good to hear from people from so many different parts of the world and I hope you are safe.

      There are many reasons why followers of the Dukan Diet don’t use oat bran. This might be because of allergies or because of difficulty finding the food or might just be because they don’t like it. The oat bran was a relatively recent addition to the Dukan Diet which Dr Dukan made because of the health benefits of oat bran and because he felt it helped people stick to the diet. However oat bran has not always been a part of the Dukan Diet and before it was added the diet still produced very good results. Not using oat bran doesn’t mean you are not following the rules but replacing it with something else that Dr Dukan has not approved of is breaking the rules.

      Take care

      Best wishes


      • Nermin on November 7, 2013

        So I don’t have to take 3 Tbs of oat bran everyday in the Stabilization Phase.. I’m glad that I don’t have to use it as I can’t find it in Egypt at all, although I’ll miss a lot of good recipes in both Attack and Cruise phases.. wish me luck 😀

        Thanks a lot 🙂


        • Amber on November 7, 2013

          Hi Nermin

          Let me know how you get on.

          Good luck!

          Best wishes


  • Joyce on October 23, 2013

    Can you use wheat bran in place of the oat bran ?

    • Amber on October 24, 2013

      Hi Joyce

      Wheat bran can be eaten in addition to oat bran where you are suffering with constipation but it is not a direct substitute for oat bran There is no approved substitute for oat bran.

      Kind regards


  • Mamlakah on September 17, 2013

    I live in Nigeria and Oat bran is not readily available, what can i use as a substitute and still do the diet?

    • Amber on September 17, 2013

      HI Mamlakah

      If you cannot get oat bran you just do without as Dr Dukan does not provide any substitutes for oat bran. The diet does work without it as the Dukan Diet had no oat bran in it for many years.

      Best wishes


  • saly on September 10, 2013

    can i use the whole grain oats?

    • Amber on September 11, 2013

      Hi saly

      I’m afraid only oat bran is allowed and this isn’t the same as whole grain oats.

      Kind regards


  • mona on August 13, 2013

    I am residing in pakistan and i am not able to find oat bran here.. All i could find is the oat flakes and white oats..
    Can the diet be followed without oat bran?

    • Amber on August 13, 2013

      Hi Mona

      Yes if you can’t find oat bran you can still follow the diet.

      Best wishes


  • Mary Barrett on July 26, 2013

    They make GF oat bran

    • Amber on July 26, 2013

      Hi Mary

      Yes you can get gluten free oat bran but some people with a gluten intolerance also find they can’t eat oats.

      Kind regards


  • Anna on April 26, 2013

    I am using Prewett’s oatbran. It says on the ingredients 100% oatbran.

    I bought it from Holland and Barrett. Thought this might help 🙂

    • Amber on April 26, 2013

      Hi Anna

      Anything that is 100% oat bran is fine.

      Best wishes


  • Paul on April 26, 2013


    I have found an oatbran cereal in the UK called Toasted Oatbran by Mornflake.
    The igredients are Oatbran 99% and Antioxidants.
    Is this Dukan safe as it is an easy way to have breakfast and get my oatbran ration.


    • Amber on April 26, 2013

      Hi Paul

      This is fine to eat but I prefer my oat bran porridge!

      Kind regards


  • Anastasia on October 5, 2012

    One last question Amber. (sorry for asking things all the time)!

    Last night during shopping I found “Nairn’s oatcakes”. I have read the ingredients and they seem to be ok. Please check them out and tell me. Here they are:
    Wholegrain oats, Sustainable palm oil, Sea salt,
    Sodium bicarbonate, No flour,No wheat, no added sugar

    Nutritional info (per oatcake):
    energy: 36kcal, protein 0.8g
    carbs: 4.3g of which sugars 0.1g
    fat: 1.7 of which saturates 0.7g
    fibre: 0.6g, sodium 0.05g

    *****By the way i have lost anothen 0.6kg today.

    thank you so much

    • Amber on October 6, 2012

      Hi Anastasia

      Don’t worry about the questions. It will get easier as you get more familiar with the diet.

      I’m afraid these oatcakes don’t contain the right ingredients. Whole grain oats are not the same as oat bran and the only oil allowed each day is a teaspoon of olive oil or rapeseed oil.

      This diet certainly seems to be working well for you:)

      Best wishes


  • Anastasia on October 4, 2012

    Dear Amber,

    Thanx for your quick reply.

    I was sure that this amount of weight loss should be from water. Today i have lost just 0.4kg. That makes a total of 4kgs in 3 days. Isn’t that much to be just water?
    If I lose some more weight tomorrow I will continue attack phase for 1-2 days more.
    I also couldn’t find oat bran yet, so i don’t eat that yet. I wonder if I will put some weight back if I start it?


    • Amber on October 4, 2012

      Hi Anastasia

      The weight you’ve lost is definitely not all water.

      It is possible that eating the oat bran could increase the calories you are eating and this could slow your weight loss. Having said that it is important to eat a reasonable level of calories to stop your body going into famine mode. If it thinks that food is in short supply your body slows down your metabolic rate in order to keep you alive until the imagined famine ends!

      Oat bran is also very good for you.

      Take care


  • Anastasia on October 3, 2012

    Hi again Amber.

    If I understand clearly we cannot use oat flakes or Quaker, right?
    I am on my third day of attack phase and i have already lost 3.5 kgs. Is that normal? Am i doing something wrong? My start weight was 86.5kg and now I am 83kg…..

    • Amber on October 3, 2012

      Hi Anastasia

      You are right about the oat flakes and Quaker oats they aren’t the same are oat bran.

      It is quite a coincidence as I only replied to someone yesterday by email who had lost a similar amount in just two days but she did put 0.9kg back on the third day.

      Some people do experience a very rapid weight loss in the Attack Phase but this can be due in a large part to water retention being cleared. This can then result in their weight loss stalling when they start to eat vegetables as vegetables tends to promote water retention. However in your case I am wondering if the medication is speeding up the results and I would suggest checking with you doctor especially as he may need to adjust your medication as a result of the weight loss. Insulin intolerance is one of those conditions that can respond extremely well to weight loss.

      Keep up the great work!

      Kind regards


  • Valeria on March 27, 2012

    Hi.is oat bran and wheat oat flower the same thing?can I use it for backing?Thanx

    • Amber on March 28, 2012

      Hi Valeria

      I’m sorry but wheat oat flour isn’t the same as oat bran so you can’t use this for baking.

      Kind regards


  • Richard on March 20, 2012

    Hi Amber,

    I’m currently residing in India and am keen on following this diet regimen to reach my target weight. Where can I get a list of “Indian foods” for this diet? I prefer eating vegetarian food and do not consume beef, pork at all.


    • Amber on March 20, 2012

      Hi Richard

      Dr Dukan hasn’t put together an Indian version of his Dukan Diet as yet so the information you’ve asked for isn’t available. If you give me details of foods that you think might be suitable and that you can eat I’ll check the nutritional information online and let you know if I think it is suitable.

      Kind regards


  • Naz on November 17, 2011

    Hi Amber,

    I’m gluten intolerant, do you know what is a good alternative to oat bran?

  • Tracie orchard on September 14, 2011

    hi frist time on this diet can i use the oat bran you can buy from woolies or iga

  • katie on July 28, 2011

    Thanks Amber – I managed to find some 100% Oat Bran at a different health shop 🙂
    The first shop I tried had sold out because the Dukan diet is so popular at the moment!

  • katie on July 27, 2011

    Hi Amber, thank you so much for this site it is great & so much help! 🙂
    I just went to the health food shop & they only had an “Oatbran & Oatgerm” mix – the guy said it was basically the same though.
    Do you know what the difference is, and whether I can eat it on this diet?
    Thanks, Katie

    • Amber on July 27, 2011

      Hi katie

      Oat bran and oat germ aren’t the same. An oat grain is made up of two parts: the inedible outer hull which is called the husk and the oat kernel. The outer layer of the kernel is the oat bran and the middle is the oat germ. Dr Dukan recommends oat bran so I would suggest trying a different health food shop. In which country do you live?


  • Paula Burgess on July 12, 2011

    Are we able to use oat bran in tablet form on the Dukan Diet?

    • Amber on July 12, 2011

      Hi Paula

      The oat bran is intended to be eaten as a food not as a tablet so it isn’t a recommended option. Not using oatbran would mean that you miss out on a lot of the recipes.


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