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Original Natural KLB6 Tablets

Manufactured by Holland & Barrett, KLB6 is claimed to support weight management as noted on the box of the pill. None of the ingredients in the product have been proven to work in this way in clinical studies.

Below we have reviewed Original Natural KLB6 Tablets against our review criteria to help consumers make an informed decision.

HB_KLB6 Review

Original Natural KLB6 Tablets Pros
  • Made and sold by a well-known high-street company in the UK
  • One of the ingredients has been suggested in studies to help to control blood glucose levels
Original Natural KLB6 Tablets Cons
  • None of the ingredients have been proven to aid weight loss
  • No clinical trials to support the product as a whole

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Original Natural KLB6 Tablets Review

KLB6 is a health supplement that does not extensively specify what it aims to do in terms of weight management. All we can infer is that it aims to carry out weight management with its “Dieters Support Formula” as mentioned on its bottle.

Claimed weight loss benefits

KLB6 does not make any specific claims in terms of appetite suppression, fat burning or metabolism boosting, for instance. It claims to be a weight management health supplement in general. The key ingredients in the product have been associated with appetite suppression and metabolism boosting.

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How Original Natural KLB6 Tablets Works

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KLB6 is a health supplement that aims to carry out weight management. Manufactured by Holland & Barrett, it contains several ingredients such as Vitamin B6 and Cider Vinegar. Unlike other weight loss supplements, it does not make any specific claims like appetite suppression or fat burning or metabolism boosting, but instead aims to carry out weight loss in general.

The official website is quite brief in terms of the description that it offers with reference to how the health supplement works. It does not offer details in terms of what metabolic processes take place or how they translate into changes within the body. Hence, the only option we have is to look at individual ingredients and see how they might translate into weight loss.


The first ingredient in discussion is kelp. Kelp is seaweed, and is believed to be quite rich in a wide variety of nutrients. The nutrient that is of concern for us is iodine, which is said to be useful for the functioning of the thyroid gland. If the body experiences a deficiency of iodine, this might disrupt the functioning of the thyroid. This could subsequently translate into the thyroid being incapable of moderating weight management. Individuals with iodine deficiencies might therefore end up gaining weight owing to the lack of functioning of the thyroid.


Lecithin is another ingredient present in KLB6. It is a lipid in nature and is composed of various compounds such as fatty acids and triglycerides. It is believed that lecithin goes into the making of cell membranes and it can hence play a role in determining what penetrates through these cell membranes. Lecithin also supposedly displays properties of fat emulsification, which means that it might help to regulate the amount of fat in the body when it comes into contact with water. Therefore, within the bloodstream it keeps the fat in a solvent form and acts to prevent it from accumulating together.

Cider Vinegar

Cider vinegar is another ingredient that goes into the making of KLB6. Cider vinegar might be able to alter the glycemic index of a meal, which implies that it can essentially reduce the content of glucose going into the body. This is thought in turn to have an appetite suppressing effect on consumers as regulating blood glucose levels can help to prevent sugar cravings following a meal.

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Key Original Natural KLB6 Tablets Ingredients

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Kelp is a form of seaweed, and is believed to be a source of potent organic nutrients. Key in this regard is the nutrient iodine, of which kelp is believed to be a pivotal source. We were however unable to come across studies that could help us in establishing the clinical validity of kelp as an agent of weight loss. Instead, we came across a study which showed that intake of kelp could potentially result in accumulation of arsenic compounds in the body, which can be quite worrisome and dangerous.


Lecithin is a lipid that is found in plant and animal tissues. It is composed of various acids, such as fatty acids, glycerol, and triglycerides amongst others. Lecithin is often associated with weight management tendencies, and this is primarily because it is one of the major components of cell membranes and can hence regulate the flow of nutrients into and out of the cell. The primary contribution of lecithin in this regard is that it is said to be a fat emulsifier. What this implies is that when mixed with water, it enables fat to be disbursed, thus allowing you to regulate the amount of fat in the body. It is believed that owing to its presence in the bloodstream, it can keep the fat solvent and thus prevent it from clumping together.

Cider vinegar

Cider vinegar has been used by many generations as a treatment for several things, and one of the attributes attached with it is that of weight management. It is believed that cider vinegar is used in a meal because it can alter the glycemic index of the meal, which essentially means that it can regulate the amount of glucose that ends up going in the bloodstream.

A study was conducted involving 10 men with Type 1 diabetes to investigate the effects of cider vinegar on hyperglycaemia. Hyperglycaemia is a condition whereby the blood glucose level in the bloodstream spikes up. All the subjects either had to consume 30 ml of vinegar with 20 ml of water or a placebo 5 minutes before a meal. The results demonstrated that cider vinegar could indeed be used to reduce the likelihood of the occurrence of hyperglycaemia.

Vitamin B6

Finally, we have vitamin B6, which is a water-soluble vitamin that is believed to be an essential part of the diet. It is believed that vitamin B6 is useful for weight loss because it positively influences the metabolism of the body. Vitamin B6 plays a pivotal role in maintaining the level of blood glucose within a normal range. It is also believed that it plays a role in terms of weight loss by stimulating the thyroid in the body. Whilst there are a wide variety of studies to show other useful functions of Vitamin B6, we were unable to find one that formulated a link between vitamin B6 and weight loss.

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Clinical Studies

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The product as a whole does not have any clinical trials associated with it. We often come across health supplements that do not have clinical trials or studies to support them. When confronted with such a situation, we usually look at studies associated with their ingredients. While studies associated with ingredients cannot be equated to studies associated with the supplement as a whole, they are still helpful in offering some insight with reference to the usefulness of the supplement in question.

We were unable to find any studies associated with the effectiveness of kelp and lecithin, which are two of the prime ingredients of KLB6, for weight loss. However, we were able to find studies for one particular ingredient, cider vinegar.

Cider Vinegar

The first study involved 10 men with Type 1 diabetes as participants. The purpose was to determine if and how cider vinegar can play a role in inhibiting hyperglycaemia. Hyperglycaemia is a situation where by the body experiences a sudden surge of glucose, and glucose levels can rise tremendously. For the purpose of this particular study, participants were given either a placebo or 30 ml of vinegar with 20 ml of water right before a meal. When the study finished, the results demonstrated that cider vinegar plays a role in inhibiting hyperglycaemia and is hence associated with lower and stable levels of glucose in the body.

Another study wished to demonstrate the effects of cider vinegar on the content of glucose in a meal, or more specifically the glycemic index (GI) of a meal. The study involved investigating 32 types of Japanese foods and the results demonstrated that use of cider vinegar could lead to a decrease in the GI of rice between 20% and 35%.

Finally, another study was conducted on women in particular to see if there is potentially a link between cider vinegar and meal consumption. In other words, does cider vinegar have any role to play with reference to appetite suppression? The results of the study showed that consumption of cider vinegar resulted in the intake of fewer calories as opposed to when they consumed the placebo.

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Original Natural KLB6 Tablets Side Effects

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The official website does not give any information about side effects of this product, and prospective customers may be tempted to believe that there are no side effects at all. However, upon scrutiny of the ingredients that go into the making of KLB6, we discover that the health supplement is actually capable of displaying several side effects and may be unsuitable for some groups of people.


Kelp is contained in KLB6 because it is a source of iodine, and it is hence thought to be useful for the functioning of the thyroid. However, if the iodine supplied through kelp is even slightly more than the required amount, the thyroid can become either inactive or overactive. Moreover, kelp is associated with heightening the levels of potassium in the body, and this can subsequently result in kidney disorders.


Lecithin is also capable of manifesting some side effects, though these are not too disastrous in nature. It can cause diarrhoea and nausea. Moreover, it is often associated with causing abdominal pains and feelings of fullness.

Cider Vinegar

Finally, we have cider vinegar. It is believed that if consumed beyond a particular amount, cider vinegar can cause a deficiency of potassium, which results in extensive weakening of the bones. Moreover, individuals suffering from diabetes should be careful when it comes to intake of cider vinegar, since it can alter the glucose level in the bloodstream.

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How to Use

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The official website is limited in terms of the information it offers. All we are told is that one should take two tablets three times a day, thus amounting to a total of six tablets, and that it is advisable and preferable that these be taken with meals. However, beyond that no directions regarding usage are provided. The manufacturers do offer any precaution; in cases of pregnancy and breast-feeding, it is advisable to talk to and consult a doctor before taking the health supplement.

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Who Makes It?

The company behind KLB6 is Holland & Barrett. It has a fairly established presence, with over 700 stores spread across the United Kingdom, Republic of Ireland, South Africa, Singapore and Malta. It was founded in 1870, and hence has been operating for more than a century. Within the United Kingdom, it is currently based in Warwickshire. It has an extensive variety of products to offer, ranging from eatables and diet items to sport nutrition, beauty items and multivitamins amongst others. More detail about the products that this company offers can be found on its official website.

The Contact Us section of the company website appears to be quite helpful. The company has listed a telephone number that you can call to place your concerns and queries. Alternatively, you can also email them by filling in a few text boxes. The company also provides the option of placing an order online and you can do so by calling at a particular number that is provided on the website. You can also email at a particular address to enquire about queries relating to products. The company also lists its postal address.

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Where to Buy Original Natural KLB6 Tablets


If you purchase through the official website, you can buy the single bottle of the health supplement for £11.39. Each bottle contains 200 tablets and is worth one month’s supply, as you are expected to take 6 pills each day. Shipping costs are £1.99 within the United Kingdom, but these are when you purchase a single bottle. If you purchase two or more bottles together, you are spared from shipping costs as shipping costs are not to be paid if an order exceeds £20. Orders within the United Kingdom usually take 4 working days on average to be delivered. In the case of international orders, there is a flat shipping rate of £6.95. Moreover, international shipping is currently available only for the European countries and not elsewhere. Finally, if you are not satisfied with the product that you have received, you can return it back if it is unopened. The FAQs page lists the address at which you can return the product.

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Does Original Natural KLB6 Tablets Meet our Approved Criteria

Money-back-guarantee: There is no mention of a money-back guarantee.

One-off payment: The product does not appear to be linked to an auto-payment scheme.

Manufacturing Standard: There is no mention of manufacturing standards.

Accompanying Diet Plan: There is no mention of a diet plan.

Ingredients and quantities disclosed: Yes, a full ingredients list is provided.

Company contact details readily available: Full contact details are available on the official website.

Original Natural KLB6 Tablets does not meet our ‘Approved’ criteria as there is no money-back guarantee or diet plan and there is no mention of manufacturing standards.

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Overall Verdict

The official product website does not actually explain how the product is supposed to work, simply stating that it should help to support weight maintenance. The product as a whole has not been tested for its potential weight loss effects and nor have some of the key ingredients. It has been suggested from clinical trials that cider vinegar could help with the control of blood glucose levels, though this is unlikely to result directly in weight loss. There are some side effects and the product is not suitable for certain groups of people.

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