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120 Capsule Tub - sea kelp tablets
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Kelp 1000mg

star ratingstar ratingstar ratingstar rating  4 out of 5  | 11 product reviews
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120 Capsules - E639

Blog FAQ's


Sea Kelp 1000mg  


  • For general wellbeing and vitality  
  • Promotes healthy thyroid function
  • Supports hair, skin and nails
  • Made in the UK and GMP approved


The benefits of Sea Kelp supplements


Sea Kelp is a nourishing seaweed that contains high concentrations of vitamins and minerals. It is particularly rich in iodine, which supports healthy thyroid function and regulates the production of thyroid hormones. Alongside iodine, sea kelp provides beneficial levels of iron, magnesium and potassium, which combine to support a strong immune system, healthy cognitive function and improved energy levels. In addition, these nutrients also promote healthy hair, skin and nails.


Promote healthy thyroid function


The thyroid gland produces hormones that control the bodys metabolic rate - the rate at which the body burns energy to fuel body functions. If too many or too few of these hormones are produced, the bodys systems become disrupted and can result in weight gain, fatigue or low mood. Iodine helps to regulate the production of thyroid hormones and maintains a healthy balance.


Premium quality Kelp supplements


Not all kelp supplements are the same. Sea kelp requires nutrient-rich waters in which to grow, and so the nutritional content varies depending on the conditions in which it is grown. At Simply Supplements, we ensure that all our kelp extracts are sourced from the highest quality GMP approved raw materials and are manufactured in the UK. Our premium-quality EasyGest capsules can be pulled apart and added to food or drink - many customers sprinkle the powder into their morning smoothies.


 Nutritional InformationPer capsule
 Kelp Extract 1000mg (5:1) standardised to 200mg
1000mg    -
 NRV = Nutrient Reference Value (previously referred to as RDA) 
 g = Microgramme, mg = Milligram, IU = International Units


Other Ingredients:  Microcrystalline Cellulose, HPMC Vegetarian Capsule (Titanium Dioxide), Magnesium Stearate.

V: Suitable for vegetarians
Free from artificial additives and preservatives
Lactose free
Wheat free
Fish free
Gluten free
Yeast free


Take two to three capsules daily as a food supplement or as directed by a healthcare professional. Store in a cool dry place. Keep away from children at all times. Do not use if the seal is broken.


If you are taking any prescription medication, you have a medical condition or you have specific concerns about the suitability of any of our products in relation to these, you should always consult your GP or Pharmacist prior to taking supplements. Pregnant or lactating women should consult a GP before taking supplements. Do not exceed the recommended daily dosage. Keep out of reach of children. Supplements should not be taken as a substitute for a varied diet. Always read the label before use.  




UK Mainland


STANDARD: FREE 2-day tracked delivery for all online orders.

All orders dispatched to UK addresses will automatically qualify for FREE Standard 2 Day Delivery, regardless of order size. This means you won't be waiting long for your goods to arrive. Order before 12.30pm Monday-Friday to receive goods within 2 working days (excluding bank holidays). 


EXPRESS: FREE next-day delivery for orders over 70.

Place your order before 12.30pm Monday-Friday to receive your goods the next-working day (excluding bank holidays). For orders under 70 there is a small 5.25 charge for Express Next Day Delivery.


Track your order

All orders dispatched to UK addresses can be tracked. Simply follow the link in your dispatch confirmation email to locate your parcel. If you encounter any problems please call our freephone number 0800 988 0292 to speak to a customer service advisor.


Europe & Rest of the World

For all European and International orders, delivery charges will vary depending on the total weight and size of the order. As you add products to your basket the delivery charge will automatically update. This service offers all our international customers fair and competitive delivery charges.


Terms & Conditions

Orders must be placed before 12.30pm Monday to Friday (excluding bank holidays) to qualify for our Express Next Day Delivery or Standard 2 Day Delivery. These services are currently available for UK addresses only and are subject to stock levels. If an item(s) is out of stock, it will be given priority delivery upon arrival.


Please Note: The views expressed below are those of Simply Supplements customers. Simply Supplements does not endorse these views, nor should they be regarded as medical advice.

  • 5 stars5 stars5 stars5 stars5 stars

    Reviewed on
    17th Dec 2014
    Iron booster 
    BahaNick, BRADFORD
    Works a treat, went to give blood today and my fingerprick test sank like a stone, glad I tried this supplement

  • 5 stars5 stars5 stars5 stars5 stars

    Reviewed on
    2nd Dec 2013
    Underactive thyroid  
    Carys Bracken , Brighton
    I am trying Kelp for an underactive thyroid as I was advised that these would help. Your price is great compared to other sites and the product arrived in two days with free delivery. Great service so far.

  • 4 stars4 stars4 stars4 stars

    Reviewed on
    3rd Jul 2012
    Express Delivery 
    Yvonne, Warminster
    Brilliant!!! Y havn't you introduced this before. The express delivery is great, I have to order Kelp in bulk for my friends and family and this quicker delivery service for spending over 60 is fantastic and keeps all the friends and family quiet.

  • 4 stars4 stars4 stars4 stars

    Reviewed on
    4th Apr 2012
    Help from Kelp 
    Adam, Bideford
    Been using your Kelp for 3 months now and my general health is much better. I always felt run down and tired which caused me to be ill a lot. A great nutrient booster.

  • 5 stars5 stars5 stars5 stars5 stars

    Reviewed on
    27th Jan 2012
    robert mcCann, whitwick
    i have tried all sorts of supplements to boost my energy levels and none of them work as well as kelp.

  • 5 stars5 stars5 stars5 stars5 stars

    Reviewed on
    6th Sep 2011
    helped stopping me feel lethargic 
    C Mahony , Woking
    I use Kelp, which my sister recommended I take because I was feeling generally tired and lethargic all the time.  I genuinely feel my energy levels have increased enormously since taking this product - a very surprising and pleasing result.    

  • 5 stars5 stars5 stars5 stars5 stars

    Reviewed on
    1st Sep 2011
    This really does help! 
    Stephen Codd, Swansea
    Kelp - this was something that a good friend of mine suggested I take as we both have under active thyroids.  It has helped.    

  • 4 stars4 stars4 stars4 stars

    Reviewed on
    28th Sep 2010
    Great source of Iron 
    Dawn Thompson, Great Yarmouth
    I often find it difficult to find supplements that are suitable for me to have and to get what I need but having found kelp has given me the extra I need, I do eat a lot of foods that contain Iron but have kept topping up on it with kelp. It was difficult to find but am very happy to have got it from you. 

  • 4 stars4 stars4 stars4 stars

    Reviewed on
    8th Apr 2009
    Increasing iron levels 
    Mrs Kaur, Bath
    My doctor told me that I have a lack of iron in my diet and I have been looking for a supplement to get the sufficient levels of iron that I need, I discovered kelp and have been taking it everyday. I have since gone back to my doctors and my levels of iron are slowly increasing.

  • 4 stars4 stars4 stars4 stars

    Reviewed on
    17th Jun 2008
    Doctors also take Supplements 
    Dr J Stephens, Birmingham
    Most people assume it's a myth that Doctors take supplements but I am one of few I imagine that take supplements. I have had kelp off you for a few months now as it contains many minerals like magnesium, potassium and iron all are essential minerals the body needs. I don't take it everyday tho as I do have a very good diet but do have them as a top up. It is a very good thing to have around.

  • 4 stars4 stars4 stars4 stars

    Reviewed on
    25th Jan 2007
    Will order again  
    Tim Hodgekinson, Newcastle
    I am pleased with the order that I have received from you, which included this kelp. They are a very reasonable price, I cannot fault  them. My order arrived in good time and included a free gift.

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  • 11th November 2014 - donna
    Q: Your sea kelp tablets state a vegetarian capsule but then go on to say contains an ingredient derived from beef. I take it these are not suitable for vegetarians??!
    A: Please accept our sincere apologies, but we can confirm that the Kelp capsules are vegetarian friendly. Unfortunately the ingredients list had not been updated correctly when the product was recently changed. The website has now been updated to reflect. We apologise for any confusion this may have caused.
  • 22nd October 2014 - Sandra wilson
    Q: I have an under active thyroid & am taking levothyroxine. Can I take your marine collagen safely.

    A: Unfortunately, as we are not medically trained, we are unable to advise on whether it would be safe to take along side levothyroxine. However, we do suggest that you check with a local pharmacist or GP who will be able to advise you correctly.
  • 21st October 2014 - Trish
    Q: Hiya, i take Menopace Plus daily as a supplement for starting to go through the change, obviously that consists of lots of different vitamins etc, is it ok to take this high strength of 1000mg per tablet alongside this pls.

    Thks Trish
    A: Unfortunately, we are unable to comment on whether or not our Kelp would be safe to take with another supplement which we do not sell, as we do not have the relevant information for it. We kindly suggest that you check with your local pharmacist who will be able to advise you correctly.
  • 16th May 2014 - paulaanne richardson
    Q: Ive exceeded my daily dose of sea kelp tablet I took 2 more than stated is this safe as worried.
    A: Studies have shown that taking too much kelp may cause your thyroid gland to produce too much or not enough of this hormone. High thyroid hormone levels may cause sudden weight loss, while low levels of thyroid hormone may result in unusual weight gain. When taking kelp or any other supplements for that matter, always follow the recommended daily dose as stated on the label. If you feel unwell after taking more than the recommended number of pills, please seek additional care from your GP.
  • 14th May 2014 - l.dore
    Q: Would sea kelp tablets be suitable for a 15kg dog?
    A: Our Sea Kelp is specifically designed for human consumption although some of our customers do give it to their pets because it maintains their health as well as revitalize them. Please remember though that pets' stomach can be quite sensitive so we advise to confirm with your Vet first before giving our Sea Kelp to your pet.
  • 3rd March 2014 - jeanette
    Q: Ive read that brown seaweed extract helps rid the body of mercury,does kelp do the same thing?Thanks
    A: Officially, kelp is considered a brown seaweed, despite its variance between browns, reddish-greens, and purplish-brown. Kelp is known primarily as good source of iodine to improve production of thyroid hormones. However, research has it that kelp also acts a chelating agent, to remove heavy metal toxins from the intestines.
  • 28th January 2014 - mary jefferson
    Q: could you tell me how much iodene there are in seakelp as i am under active thyriod and the doctor said if there is alot in the thyroxine wont work thank you or do you have other products to thickin hair up with no iodene
    A: Iodine is naturally found in Kelp which is sourced from seaweed. Unfortunately, we do not measure natural contents or ingredients of our products as it is difficult to do so however research has it that Seaweed naturally contains 33% of Iodine. You may want to try other vitamins and supplements that may help grow and strengthen hair like vitamin C, omega-3 and omega-6 fatty acids, amino acids, B vitamins, vitamin A, and vitamin E.
  • 24th January 2014 - B
    Q: how many sea kelp 600mg tablets do i take daily?

    We recommend taking one capsule daily as a food supplement or as directed by a healthcare professional.

  • 21st November 2013 - Suzanne

    Can Kelp help to reduce skin break-outs? 


    Kelp is rich in nutrients that are known to promote healthy skin, including Iodine, B Vitamins, and Zinc. Kelp supplements are popularly taken by women and men to support healthy skin, hair and nails. Therefore, we would certainly recommend that you give this product a try.

  • 6th June 2013 - Lynn Burton
    Q: Is it safe to take sea kelp with medication for high blood pressure.

    Although we are not aware of any interactions, as we are not medically trained we can only advise that you speak to your GP or pharmacist regarding this.

  • 19th April 2013 - Emma
    Q: Does sea kelp help you hair grow?

    Sea Kelp is naturally rich in Iron, Iodine and protein. Many customers find that it can be beneficial in supporting hair growth.

  • 25th July 2012 - dianna
    Q: hi
    i'm taking levothyroxine 100 is kelp ok for me as i suffer with fatigue and my gp says i have low iron absorbtion. i also have barretts oesophagus hiatus hernia and a GIST.

    We are not aware of any side effects or interactions. However, as we are not medically trained, we can only advise that you consult your GP in regards to this.

  • 27th May 2012 - fran
    Q: Are kelp tablets suitable to take for a 12yr old? Thanks.

     Generally with supplements, we do not advise anyone under the age of 16 to take them. We would advise that your consult your GP in regards to this.

  • 28th April 2012 - Stella
    Q: I desperately need help with poor nails, which have been peeling and splitting for over 2 years now.I have been recommended sea kelp and wonder if I can take this together with marine collagen which I would also like to try. If so, what strengths should I use?

    Providing that you do not exceed the recommended daily dosages of either product there should be no problem taking Sea Kelp and Collagen in combination. We would advise that you take 3 capsules of Marine Collagen 500mg and 1 capsules of Sea Kelp 600mg on a daily basis.

  • 20th May 2009 - karlie
    Q: i am on iron tablets can i still take these

    With regards to taking different supplements together, one on the many benefits of natural herbal medicines is the safety parameters when mixing several vitamins, minerals and nutrients. Nonetheless, whilst a majority of combinations are safe, we would advise that you consult your GP or Pharmacist with any specific instances, particularly in relation to a medical condition as the potency of herbs when mixing does differ.

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