Holland & Barrett Spirulina Tablets

Updated May 9, 2019.
Published Apr 23, 2015.

Holland & Barrett Spirulina Tablets contains 500mg per tablet, claiming to help make you feel more energetic by providing you with blue-green algae. However, some Spirulina has been found to contain high levels of mercury and lead, which leads us to question whether this supplement is safe to take. We take a look at Holland & Barrett Spirulina Tablets to find out more.


  • Spirulina may have many health benefits
  • Holland & Barrett guarantee the quality of their supplements
  • May help support a weight loss regime


  • Taking 9 large tablets each day will not suit everyone
  • The optimum serving size for Spirulina has not yet been established
  • No customer feedback relating to weight loss
Holland & Barrett Spirulina Tablets
Holland & Barrett Spirulina Tablets are a health supplement that contains just Spirulina, a natural algae that grows in the world’s oceans and lakes. It is considered a Superfood so may have health benefits and help weight loss too.

Holland & Barrett Spirulina Tablets Key Features

Holland & Barrett Spirulina Tablets are popular right now. Advertised on national TV the tablets look to be a healthy support to your lifestyle and although it is not claimed that this will help weight loss, many people believe Spirulina to be one of the healthiest and most nutritious foodstuffs on the planet.

Holland & Barrett Spirulina Tablets Key Points

  • On sale from Holland & Barrett – a respected British company
  • The optimum serving size for Spirulina has not yet been established
  • No customer feedback relating to weight loss

Spirulina is a cyanobacteria – a natural bacterium that can be consumed by humans and animals and is in a similar class or organisms as plankton. It is single cell algae that grows in outdoor pools, lakes and oceans under sunlight.

It is practically a complete protein because it contains the nine essential amino acids – the building blocks of protein that are only obtainable by diet.

There are 20 different amino acids that can form a protein and although our bodies manufacture most amino acids there are nine that the body cannot make and therefore have to be obtained by diet. These nine amino acids are called essential amino acids. For a protein to be classified as “complete” it must contain all nine essential amino acids in more or less equal amounts.

Meat and eggs are complete proteins. Spirulina, strictly speaking, is not really a complete protein because it lacks Methionine and Cysteine – two of the nine essential amino acids.

However, it is a valuable foodstuff and one of the few non-animal products that contain high amino acids and so many vitamins, minerals and antioxidants. It has been investigated as a food supplement for malnourished children in the third world. It was used by NASA in the space diets of the astronauts.

Spirulina may be effective for weight loss because the high protein content will help you fill fuller so less likely to overeat. It may also provide valuable health support so may enhance energy levels as well.

How to Take Holland & Barrett Spirulina Tablets

Take three tablets three times daily, 1/2 an hour before meals.

Do not exceed the stated dose.

Holland & Barrett are a well-known British company. Most towns have their Holland & Barrett shop where you can buy health foods and nutritional supplements. The company market their own brands, such as this one, but also sell countless other health food brands.

We have also covered Holland & Barrett supplements in previous reviews including KLB6 a kelp and lecithin supplement which had some good points but we had to reject.

Holland & Barrett Spirulina Tablets Concerns

  • Is this Spirulina safe? Some Spirulina has been found to contain high levels of mercury and lead
  • Will this supplement really help you lose weight? There is a lack of clinical evidence
  • Why is there no feedback that mentions successful weight loss? We would have expected to see this mentioned in feedback but it is not

What does Holland & Barrett Spirulina Tablets claim to do?

Holland & Barrett don’t make any claims about what this supplement will do for health or weight loss. However, they do provide an explanation about Spirulina,

Spirulina is a well-known type of blue/green algae that can be found in the world’s oceans and lakes. Spirulina is an important source of plant enzymes. Enzymes are protein molecules that are an integral part of many important systems within the body. Spirulina contains trace amounts of vitamins, minerals and amino acids, plus the important fatty acids your body needs every day. Because of its popularity as a completely natural food source, Spirulina is harvested for commercial use around the world.

Does Holland & Barrett Spirulina Tablets work?

There is no real evidence that Spirulina will work for weight loss. Additional clinical trials are needed to establish the antioxidant and anti-inflammatory benefits in humans and there have been concerns about the quality and accuracy of the tests so far carried out. Most of the weight loss claims about Spirulina are anecdotal.

Spirulina may provide many health benefits. One test showed that high levels of antioxidants might protect against cancer. It may help protect against inflammation and cardiovascular stress. However, serving size is unknown and according to research, efforts should be taken to standardize the dose of Spirulina in future human clinical studies.

One of the major concerns about Spirulina is contamination. It can contain high levels of mercury and heavy metal deposits depending on the waters where it is harvested.

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Holland & Barrett Spirulina Tablets Ingredients

Holland & Barrett Spirulina Tablets is not marketed as a weight loss supplement but many people do use this substance in order to promote health and weight loss.

  • Spirulina (500mg): This natural foodstuff is a great source of amino acids, antioxidants, vitamins and minerals. It appears to improve blood sugar levels and reduce cholesterol and may offer protection of the liver so does have relevance if you are trying to get fit and healthy. Spirulina is sometimes included in protein shakes and meal replacements because it can cause feelings of fullness. Source

What Does All This Mean?

Some people swear by Spirulina supplements and take them on a regular basis as a support to all kinds of medical issues such as acne, digestion, joint support, immune support and countless other applications.

There is no real evidence that it will help weight loss but if taken Spirulina makes you feel fuller then it should be an effective appetite suppressant. In addition, there is some evidence that it may help to lower cholesterol levels.

Holland & Barrett Spirulina Tablets Side Effects

There are some risks with taking Spirulina. These are mainly to do with contamination of the algae by pollution and this can cause extremely dangerous side effects including liver damage, toxic shock, nausea, vomiting, and heart palpitations. It has even lead to death in some cases.

Holland & Barrett guarantee that all their supplements are safe. They provide the following information,

Holland & Barrett products are subject to critically stringent quality assurance. Our commitment to quality is the highest in our industry to ensure the best quality nutritional supplements money can buy. You have our guarantee!

Holland & Barrett provide generic health warnings on all supplements.

Caution: Food supplements must not be used as a substitute for a varied and balanced diet and a healthy lifestyle. If you are pregnant, breastfeeding, taking any medication or under medical supervision, please consult a doctor or healthcare professional before use. Discontinue use and consult a doctor if adverse reactions occur.

Holland & Barrett Spirulina Tablets Customer Feedback

There is some feedback on the Holland & Barrett website and customer opinion is mostly positive.

My husband has been taking Blue Algae for years and when that was not available anymore he was advised to give Spirulina a try and at the moment it seems to be as good. He can’t be without his daily intake of algae.

One lady is taking it for sports nutrition,

I have been taking Spirulina for 4 years and wouldn’t stop. Although I find the tablets are big and hard to swallow. You can also buy this product in powder but I haven’t tried this. 100% SATISFIED WITH THIS PRODUCT.

One young woman felt it had improved her acne,

I’m super happy with this product! I saw a big difference already after 2 weeks. I recommend you to buy it!

Another customer felt it improved energy levels.

I’ve been taking this spirulina for a year now and have noticed a significant difference in my energy levels. I find it hard to take it in the powder form, so it’s much easier to swallow the tablets. I highly recommend this Holland & Barrett brand spirulina.

Holland & Barrett Spirulina Tablets Money-Back Guarantee

No money-back guarantee is available.

Where To Buy Holland & Barrett Spirulina Tablets

You can buy Holland & Barrett Spirulina from any Holland & Barrett store. It is also available from the Holland & Barrett website. A bottle of 200 tablets (3 weeks supply) costs £20.49. 60 capsules (1 weeks supply) costs £6.89. UK delivery £1.99 and free on orders over £20: International delivery is available and costs £6.95.

Watchdog Verdict

If you want to try Spirulina, Holland & Barrett Spirulina Tablets may be a good choice. The company guarantee that all their supplements are safe and are good quality and with Spirulina this is very important. It can contain high levels of mercury and lead if it is harvested from polluted areas.

There are no details about the origins of the Spirulina but Holland & Barrett are a trusted UK company. The downsides are that these tablets are big and you have to take 9 each day. Many people will struggle with this. The other obvious drawback is that there is no real evidence that Spirulina will promote weight loss.

This natural algae does have its fans who maintain that it is good for everything and it certainly does have numerous health benefits but the optimum serving size is unknown and it does require further research.

We would be cautious about taking Spirulina at this point, so for that reason we have no other choice but to reject Holland & Barrett Spirulina Tablets.

How does Holland & Barrett Spirulina Tablets compare to Phentaslim?

Criteria Holland & Barrett Spirulina Tablets Comparison Phentaslim comparison
Clinically Proven Ingredients
Side Effect Free
Positive Customer Reviews
24/7 Support
Money-back Guarantee

Disclaimer: Our reviews and investigations are based on extensive research from the information publicly available to us and consumers at the time of first publishing the post. Information is based on our personal opinion and whilst we endeavour to ensure information is up-to-date, manufacturers do from time to time change their products and future research may disagree with our findings. If you feel any of the information is inaccurate, please contact us and we will review the information provided.

Have Your Say

2 comments on 'Holland & Barrett Spirulina Tablets'

  1. After 7 days of daily intake of this Spirulina in the amount of 6-7 pills I have developed eczema on my skin on the shoulder. Big red spot. Well, I haven’t been taking it for 4 days now and it’s fading. I understood that it may provoke allergy

  2. I love eating tablets and have no problem of eating 9 ,10 or 20 a day… size or the tablet doesn’t matter either.

    I have purchased spirulina from H&B only few days ago. They are very expensive….and I am not sure will I be able to afford to buy them again for over £20 per item.I have only been using for few days so can’t yet say are they effective or not.
    Because of such a high price…I would rather them not be effective…rather to discover that they do work but I can’t afford them.

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