How Much Oat Bran Do You Eat on the Dukan Diet?

Visitors to the site have been looking for more information about oat bran and for recipes using oat bran so this is going to be the topic of my next few postings. One visitor was looking for the answer to whether you can eat unlimited oat bran on the Dukan Diet. The simple answer to this is no you can’t.

You eat oat bran in every phase or stage of the Dukan Diet and increase the amount of oat bran that you eat as you progress through the stages, but the amount of oat bran you can eat in each phase is restricted. Although oat bran does have a beneficial impact you can have too much of a good thing and exceeding the prescribed limits of oat bran, in any phase of the diet, can stop you losing weight or even see your weight start to creep up again.

It is important to remember that the Dukan Diet is a high protein, low fat, low carb eating plan and oat bran is a carbohydrate.

In the Attack Phase or Phase 1 you can eat 1.5 tablespoons every day and this increases by 0.5 tablespoon as you progress through the other Phases. Cruise Phase or Phase 2 is 2 tablespoons, Consolidation Phase or Phase 3 is 2.5 tablespoons and Stabilisation Phase or Phase 4 is 3 tablespoons.

You can add extra oat bran to your diet after the Attack Phase by using your daily tolerated items allowance. Two additional tablespoons of oat bran are considered as one of your two tolerated items.

If you are looking for ideas on how to incorporate oat bran in to your diet you might like to read my post How Can I Eat Oat Bran on the Dukan Diet, which gives 10 ideas and suggestions for eating oat bran with links to recipes.


70 Responses to “How Much Oat Bran Do You Eat on the Dukan Diet?”

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  • Gabi on June 29, 2015

    If I can’t find oat bran but just oat bran with germs (haferkleie mit keim) is it OK to use that?

    • Amber on July 5, 2015

      Hi Gabi

      It would be better to use plain haferkleie than one with added germ. If you check out the nutritional information they are not the same. The plain oat bran has less calories, less carbohydrates and more protein per 100g.

      Best wishes


  • Sabina on February 3, 2015

    Not sure why no one asked this before! I like to put my oat brain in with low fat buttered milk and let it sit overnight! It makes it like a nice interesting glamour. Anyways, are you saying the quantity in dried oat grain or already made/mixed with something? Thank you!

    • Amber on February 4, 2015

      Hi Sabina

      The amounts are for dry oat bran with nothing else mixed in. There is no reason not to enjoy the oat bran as you’ve described. I nearly always eat my daily oat bran as porridge but I make it each morning.

      Kind regards


  • Nadooshi on December 20, 2014

    Hi Amber !
    Can i ask about dried shredded coconut ? adding them to some sweet recipes ? Is it tolerated food in Dukan Diet?

    • Amber on December 21, 2014

      Hi Nadooshi

      I’m afraid coconut isn’t allowed on the Dukan Diet.


  • Mary on December 12, 2014

    thanks for the informative website, just a quick question, why are fruits forbidden in the attack and cruise phase? body doesn’t need it’s vitamins and nutrition? It’s hard to skip fruits. I have already finished the attack phase, and am thinking of fruits.
    also, I’m not too good with meats, any substitutions? can I go for veggies more than 3 days a week?

    • Amber on December 14, 2014

      Hi Mary

      Fruit is forbidden because of the high level of sugars that fruit contains. You might find the vegetarian version of the diet more suitable if you don’t like meat but I’d suggest that if possible you don’t mix and match the two versions.


  • Elena on November 10, 2014

    Could you tell me if in stabilisation faze (last one) you can have more than 3 tablespoons of oat bran? I eat oat bran as breakfast and usually 3 tablespoons is not enough…

    • Amber on November 13, 2014

      Hi Elena

      You could increase the amount on all days except Dukan Thursday when you should stick to 3 tablespoons.

      Best wishes


  • Michelle on October 26, 2014

    Do I have to eat oat bran, is it a must for the diet to work?

    • Amber on October 28, 2014

      Hi Michelle

      Oat bran although recommended isn’t a must as for many years the Dukan Diet didn’t include this food.

      Best wishes


  • Hanna on June 26, 2014

    Hi Amber,

    I have sucessfully finished the Dukan diet after 5 months and have managed to go from 67kg to 59kg and keep it off. Iv been on stabilisation for about 2 weeks with no chnage in weight too 🙂 and find I have so much energy!!

    Just wondering, If Im eating porridge for breakfast, do I still need to have oat bran? Or can I even just add 2 tablespoon of bran into my porridge or is that too much?

    Thanks so much for all your assitance along the way, if you stick to this diet it 100% works and I could not be happier!

    • Amber on June 26, 2014

      Hi Hanna

      Have you tried making porridge with your daily serving of oat bran? If you have porridge made from normal oats you would still need to have the oat bran as there is no replacement for this food.

      Best wishes


  • romar on June 6, 2014

    Hi Amber,

    Thank you for the very informative website. You motivated me to start the Dukan diet. Today is my first day in the Cruise phase, and I have already lost 4.5 lbs in a 3-day attack phase.
    If you don’t mind, I would like to know more about the two tolerated items in the Cruise phase you mentioned in this article. I didn’t know that we are allowed for two tolerated items. What are they?

  • reham on June 4, 2014

    Hi amber
    I cant find oat in my country
    So can i use this one instead ot ir
    Thanks in advance

    • Amber on June 4, 2014

      Hi Reham

      If you cannot find out bran it would just be omitted. There are no acceptable substitutes that are allowed instead of oat bran.

      Kind regards


  • shelia on May 19, 2014

    Hi Amber,

    Do you have to drink warm tea or coffee?

    • Amber on May 20, 2014

      Hi Shelia

      You don’t have to drink warm tea or coffee. You can have your tea or coffee cold or drink something different.

      Best wishes


  • Jewel on March 3, 2014

    Hi Amber
    I can’t use oat-bran
    Because i have a severely allergic to bran due to the gluten content
    Can i use just rolled oats ?

    • Amber on March 3, 2014

      Hi Jewel

      If you cannot eat oat bran you just leave it out. There is no substitute.

      Rolled oats would still contain small amounts of oat bran so if you have a severe allergy to oat bran you probably should not be eating rolled oats either. Are you confusing wheat bran with oat bran as they are very different in their make up. I’ve included an extract from this site below

      Oat Protein

      Oats are a unique cereal due to its relatively high protein content and its distinct protein composition compared to other cereals. The protein composition and concentrations according to Osborne classification in oat is given in Table 1. While prolamins are the main storage protein in other cereals such as wheat, rye and barley, in oats, the major storage proteins are globulins and prolamins constitute only a minor fraction. Moreover, instead of the more typical cereal prolamines gluten (in wheat) and also zein (in maize), oat prolamins are mainly avenins rendering them relatively safe for sufferers of gluten allergy.

      Kind regards


  • Ana on October 29, 2013


    I have started the diet 3 days ago and I think I have lost , initially, 2 lbs; however, today I indulged myself with galettes and after feeling a certain intuitive guilt :), I did more research and I realized that i should only have 1.5 spoon of oat bran a day and not with every serving of yogurt. I have made galettes tonight and ate 4 of them…I think I put the 2lbs back 🙁
    I am aiming at a 7 day attack phase, maybe 10 days, I shall just go back to one galette a day plus 1.5 table spoons of oat bran, or I shall I chose between the two?
    thank you,

    • Amber on October 29, 2013

      Hi Ana

      You are only allowed 1.5 tablespoons of oat bran in total each day so you need to chose how you use it.

      Kind regards


  • Ada on October 23, 2013

    I’ve been finding a lot of recipes to make while on the diet, however all of them seem to contain oat bran. What are the affects of eating more then the recommended 1.5 tblsp of oat bran?

    • Amber on October 23, 2013

      Hi Ada

      Eating more oat bran than recommended would slow down the rate of weight loss or possibly prevent you losing weight altogether.

      Kind regards


  • Lina on October 19, 2013

    Hi Amber. Is it a must to consume oat bran?

    • Amber on October 20, 2013

      Hi Lina

      No you don’t have to eat oat bran but it is strongly recommended by Dr Dukan.

      Kind regards


    • Sharon on January 17, 2014

      I’m so glad I saw your question, I was trying to figure out a way to ask what your question was. I’m glad I look at the comments. I’m having a tough time getting the daily amount in, feel guilty (and know it’s hurting me, of losing my weight,
      so looking for help)and I saw the oat bran porridge so maybe this will help me all the way around! have a great day.

  • Nicole on August 13, 2013

    Hi, is it ok to use a fibre supplement as well as the oat bran? i.e. to take something such as metamucil which is just pysillium husk, or is that also too high in Carbohydrate? Thanks, Nicole

    • Amber on August 13, 2013

      Hi Nicole

      Many people do use Metamucil as well as the oat bran to help with constipation but most of these people were already using the fiber supplement before starting the Dukan

      Best wishes


  • Nikki on January 8, 2013

    I’m confused about wheat bran, can I add 1 tablespoon to my daily amount of oat bran or does it replace?

    • Amber on January 9, 2013

      Hi Nikki

      The wheat bran is an addition that you are allowed to help treat constipation and it is in addition to the daily serving of oat bran not instead of.

      Kind regards


  • carla on September 13, 2012

    I have been eating bacon on the dukan diet, also I ate 1/2 cup of oat bran cereal. Will this cause me not lose any weight. I actuall have lost 4lb in the last 4 days. I am on phase one.

    • Amber on September 13, 2012

      Hi Carla

      Well done on the weight loss so far.

      If you continue to eat foods that aren’t allowed by Dr Dukan you may find that it impacts on the amount of weight you lose.

      What ultimately determines how much you lose, is the level of calories that you eat balanced against the amount of calories used by your body.

      Best wishes


      • carla on September 13, 2012

        I have only ate that much oat bran today, so will that make it harder to lose from now on while on phase 1.

        • Amber on September 15, 2012

          Hi Carla

          Don’t worry about the amount of oat bran you ate. One minor slip won’t impact on how much weight you lose going forwards.

          Take care


  • Linda K on November 12, 2011

    Apparently the amount of oat bran in the Attack Phase has now been reduced to 1 Tbsp. a day.

    • Amber on November 13, 2011

      Hi Linda

      I’ve just purchased Dr Dukan’s latest book which was only published on 10 November 2011 in the UK – The Dukan Diet Life Plan and in this he says “During the weight-loss period … you should ideally not exceed 2 tablespoons of bran per day.” I therefore think that there might be a little flexibility around this new figure of one tablespoon in the Attack Phase especially if you are following a longer Attack Phase as the additional oat bran will help with constipation as he also says ” one tablespoonful per day is not just allowed – it is recommended” and “two tablespoonfuls slightly increase the bran’s impact and ease your bowel movements.”

      Thanks for bringing this information to our attention.

      Best wishes


  • Inqu on October 17, 2011

    Hi Amber,

    One tablespoon of oat bran is no more than 2 grams of fibre and as my daily reference value is 38 grams (that is 19 tablespoon). Why not eat more?

    • Amber on October 17, 2011

      Hi Inqu

      The Dukan Diet is a high protein low carb diet and oat bran is a low protein high carb food. Dr Dukan made space for a limited amount of oat bran because of the positive health properties it provides.

      Kind regards


  • Angelika on October 4, 2011

    I used to suffer from a spastic colon about 15 years ago. Now on the Dukan diet, I find that the Oat Bran is not enought to help with constipation. I used to use Herbal Fibreblend with water which always worked like a charm. Was wondering if I can use it instead of the Oat Bran?
    I tablespoon (7g) – calories 20, fat 0g, total carbs 5g, dietry fiber 5g, soluble fibre 2g, insoluable fibre 3g, sugars 0g, calcium 47mg, protein 1g, iron 5mg, sodium 15mg, potassium 90mg, vit A 58 iu.

    • Amber on October 4, 2011

      Hi Angelika

      Dr Dukan added the oat bran to his diet because of the health benefits it provides and he doesn’t allow for any substitutions. In view of your previous health condition I would recommend checking with your doctor before continuing with the diet. If he is happy for you to continue I would suggest that you try the adaptation you’ve suggested and see how you get on.

      Kind regards


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