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Wake Nutrition Slimmer Shake

This product is a protein powder-type supplement that contains additional herbal ingredients claimed to aid weight loss. Some ingredients might have a slight effect on body composition but the claims made on the official website are not supported with clinical trials.


Wake Nutrition Slimmer Shake Pros
  • Some preliminary clinical trials have associated some of the ingredients with improved body composition if taken alongside a healthy diet and regular resistance exercise
  • The official website provides recipe and workout ideas
  • The ingredients are not likely to cause severe side effects in people of good health
  • Contains a selection of vitamins and minerals, which might aid general health
Wake Nutrition Slimmer Shake Cons
  • No clinical studies have been undertaken on the product as a whole
  • The company fails to disclose individual ingredient quantities
  • There is no information on the site about how to use the product or potential side effects
  • No money-back guarantee available

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Wake Nutrition Slimmer Shake Review

Wake Nutrition Slimmer Shake is a protein-based supplement that comes in powder form to be mixed into a beverage. The company behind the product claims that the product can help users to become slimmer and more toned. It is made principally of different sources of protein but also contains a selection of herbal ingredients as well as a mixture of vitamins and minerals.

Quite a lot of information is provided on the official site about Wake Nutrition Slimmer Shake, but a full ingredients list with individual ingredient quantities is not present. Payment methods seem to be safe. However, contact details for the company are not provided and a number of claims are made about the potential of the product that have not been proven in clinical studies.

Wake Nutrition Slimmer Shake Claimed weight loss benefits

A number of claims are made on the official site with regards to the potential weight loss benefits of Wake Nutrition Slimmer Shake. The product is advertised as a formula that can help users ‘get slimmer and more toned’, and help with weight management. It is said to be low in calories, carbs and fat, and contain ‘weight loss ingredients’.

The company claims that the product can help people to lose fat while maintaining lean muscle mass. It is added that acetyl L-carnitine helps to move fatty acids into mitochondria to be burned for energy, and that this mean more fat and fewer carbs and protein are used for energy. The company goes on to claim that flaxseed can help you feel full and ‘offers other weight loss benefits’, but does not explain what these are. Finally, it is claimed that green tea can help users to lose fat, particularly around the abdomen. These claims have not been proven in clinical studies.

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How Wake Nutrition Slimmer Shake Works


As described above, Wake Nutrition Slimmer Shake is claimed by the company behind the product to contain a range of weight loss-facilitating ingredients. The company specifically mentions fat burning and appetite suppression. It is thought that increasing protein intake while undergoing a sensible diet and regular resistance exercise can help a person to lose body fat while maintaining lean muscle mass, thus improving overall body composition. This has been testing in some clinical studies, which will be discussed in the ‘Clinical Studies’ section below. Several of the claims made on the product site however have not been proven, such as the claimed impact of green tea on abdominal fat.

How Each Ingredient Works

Whey Protein Concentrate and Isolate

Whey protein is present in this product in two forms – concentrate and isolate – but they are ultimately made of the same ingredient. Whey protein supplementation is thought to have beneficial effects on body composition when taken at the same time as a resistance exercise programme and a healthy diet. It is important to note that there is no evidence to suggest that whey protein supplementation will have any beneficial effects on the body when taken without the accompanying exercise. Some say that this ingredient therefore indirectly targets fat burning. It has also been said to help suppress the appetite in the past, without contributing much fat or many calories to the diet.

Micellar Casein

This ingredient is another type of protein and as such, is thought to have similar effects to whey protein. Casein protein however is a slower-acting protein that whey protein and it has not been shown to have the same effects on muscle gain and body composition. Rather, it has been suggested that casein protein might be useful for the recovery of muscles following exercise.

Pure Fine Oats

Oats might have been added to this product to add texture and make it less watery. This in turn, might help to keep the user fuller after they have consumed the shake because it will have a thicker consistency. Oats are sometimes thought to be beneficial as appetite suppressants because they are made of fibre that takes a longer time to travel through the digestive tract than other types of food. By taking up space in the digestive tract, it is believed that the ingredient prevents users from feeling hungry for longer, again, without contributing much in the way of calories and fat.

Flax Seed Powder

As described for oats above, flax seed powder is known for being high in fibre and as such, might have appetite suppressing effects on the body. Flax seed is thought to absorb water in the stomach and expand a little, making the stomach signal to the brain that the user is not hungry. It also takes time to travel through the digestive tract so is thought to prevent snacking in between meals. The Wake Nutrition Slimmer Shake website claims that flax seed powder has ‘other weight loss benefits’, but it is unclear what these may be.

Whole Psyllium Husks

In common with flax seed powder and pure fine oats, psyllium husk is another form of fibre. It is thought that the husks are made mostly of soluble fibre, meaning that it might suck up water and expand in the digestive tract. This is the same method sometimes described for flax seed powder. As it moves gradually through the digestive tract in a mass, the husk is thought to prevent the user from feeling hungry for longer.

Green Tea Extract

It is claimed on the official site that green tea extract can help the user to burn fat, particularly abdominal fat. Green tea is sometimes associated with fat burning due to its catechin and caffeine content. It has also been claimed to increase the metabolic rate in the past, potentially helping users to burn more energy while at rest. The ingredient has been subject to some early clinical studies, but it has by no means been proven to aid weight loss. There is no reliable evidence to suggest that green tea is beneficial for burning abdominal fat.

Acetyl L Carnitine

Finally, acetyl L-carnitine is claimed by the company behind Wake Nutrition Slimmer Shake to increase the amount of fat burner by the body in proportion to other energy sources, like carbohydrates and protein. This has not been proven. Though it is thought that the ingredient plays a role in maintaining the movement of fatty acids into the mitochondria, where they are burnt for energy, it is not proven that they actually increase the rate of fat burning.

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Key Wake Nutrition Slimmer Shake Ingredients

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A full list of ingredients is provided on the official Wake Nutrition Slimmer Shake website, but individual ingredient quantities are not disclosed. Nine active ingredients are listed, one of which is a mixture of various vitamins and minerals. The key ingredients are several different types of protein, together comprising 25g protein per serving. These are supplemented with a selection of high-fibre ingredients (pure fine oats, flax seed powder and whole psyllium husks), green tea extract, and acetyl L-carnitine.

Active Ingredients

Whey Protein Concentrate and Isolate

Whey protein is a type of protein that is extracted from the cheese-making process. It is present in this supplement in two forms – concentrate and isolate – but the company behind Wake Nutrition Slimmer Shake does not disclose how much of each type is present in the product. Whey protein concentrate is, as the name suggests, a more concentrated form of whey, typically containing a higher proportion of protein and less lactose than whey protein isolate. Concentrate is typically considered to be the more premium ingredient of the two.

Micellar Casein

Casein is another form of protein, which is also a type of milk protein. This protein is thought to take longer to be digested (and so have an effect on the body) after consumption; as such, it is considered a slow-acting protein source. As with all sources of protein, casein protein contributes a selection of amino acids, which make up the protein (and so muscle tissue). It is most commonly used in protein supplements for muscle gain, muscle recovery, and improving body composition, but has also been claimed to have some health benefits.

Pure Fine Oats

Oat is a type of plant, the seeds of which are commonly consumed as a food source, in the form of a grain or cereal. Besides their use in food, oats have also been claimed to have beneficial effects for the treatment of some health conditions. Oat bran is thought to be useful, for example, in the treatment of high blood pressure and cholesterol, diabetes, joint pain, digestive problems and several types of gastrointestinal cancer, among many other conditions.

Flax Seed Powder

As the name suggests, this ingredient is made from the seed of a plant (called Linum usitatissimum). Flaxseed has been used in herbal medicine to treat a variety of conditions. Some examples include: high cholesterol, atherosclerosis, high blood pressure, depression, rheumatoid arthritis and a range of different digestive problems, from irritable bowel syndrome to ulcerative colitis. The ingredient is said to stop people getting hungry because of its fibre content. It is thought that this quality is also what might help with cholesterol levels.

Whole Psyllium Husks

This ingredient is most commonly used as a laxative for the treatment of constipation. Consuming psyllium husks is thought to increase the bulk of stools, helping them move more efficiently through the digestive system. The ingredient has also been said to have a beneficial effect on cholesterol levels, potentially preventing the absorption of excess cholesterol through the walls of the gastrointestinal tract. Psyllium husk is often also added to weight loss supplements – not for its potential laxative effects (though this may cause a temporary reduction of the numbers on the scales) – but because it is believed to suppress the appetite.

Green Tea Extract

Green tea extract is a herbal extract taken from the leaves of the Camellia sinensis plant. This same plant is used to make several other common types of tea, but is steamed before being dried in the process of making green tea. The extract of green tea is often added to health supplements and is available to purchase as a supplement in itself. It is thought to have a range of different health benefits and the potential to prevent the onset of a number of health conditions because of its antioxidant content (which is thought to help boost the immune system).

Acetyl L Carnitine

Acetyl L-carnitine is a type of amino acid that is naturally present in the human body. It is also commonly taken in supplement form because it is thought to have health benefits. L-carnitine is thought to be useful for heart and blood conditions, including high cholesterol and chest pain. Others have suggested that L-carnitine supplementation can help with muscle problems caused by some AIDS medications, infertility, Lyme disease and ADHD, among several other health conditions. The ingredient has also been claimed to boost exercise performance.

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Clinical Studies

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There is no suggestion that Wake Nutrition Slimmer Shake has been involved in any scientific studies. No clinical trials are mentioned on the official product site. However, a number of the ingredients in the product have been subject to some clinical study. It is not known how transferable the results of the trials on individual ingredients are since we are not told what the ingredient quantities are in Wake Nutrition Slimmer Shake.

A clinical study is a method used by scientists to test the effects of a product or substance, sometimes also looking at its safety. The most reliable of these studies are performed on a large sample of human subjects, with a test group and a control group.

Clinical Studies On Each Ingredient

Clinical Studies on Whey Protein Concentrate and Isolate

There are a number of clinical studies to choose from when it comes to the effects of whey protein on body composition. Whey protein is probably the best studied of the different sources of protein and has been studied in a number of respects.

A meta-analysis was performed in 2014 on the body composition effects of whey protein when taken with resistance exercise. Meta-analyses are useful studies that gather together the data from all relevant trials on a specific topic and perform statistical analyses on the larger (and so more reliable) pool of data. In this case, the authors searched the scientific literature for all randomised, controlled studies that looked at the effects of whey protein on body weight or any relevant body composition measure using generally healthy adult participants.

Fourteen relevant trials were identified and the results of the trials pooled together, containing data from a total of 626 subjects. The results of statistical analyses on these data suggested that whey protein supplementation could significantly reduce body weight and body fat when compared to baseline (measurements before the trials started). It was concluded therefore that the current studies on literature suggest that whey protein supplementation could be useful for improving body composition.

Clinical Studies on Micellar Casein

Though not as well studied for its potential effects on body composition as whey protein, casein protein has been involved in some clinical trials. One such study, published in the Journal of Sports Science and Medicine in 2013, compared the effects of casein protein to those of whey protein. The authors aimed to determine the effects of the two protein sources on body composition and performance.

For this study, sixteen female basketball players were matched by body mass and randomly split to receive either 24g whey protein or 24g casein protein in a double blind trial. The allocated supplement was to be taken before and after exercise (four days a week) for a period of eight weeks. Before and after the trial, a selection of body and performance measurements was taken. The authors found no significant difference between the two groups in terms of body composition or performance measures. Taking protein supplements (whey or casein) before and after exercise as part of a training programme did however seem to aid body composition and performance.

A study published in 2017 looked at the ingredient from a different angle. The group investigated whether there was a difference in effect of casein protein supplementation if taken in the morning or the evening. They also looked at body composition and exercise performance, this time using both male and female participants. A total of 26 trained subjects took part in the trial, which also lasted for eight weeks. The participants were divided to receive a casein protein supplement in the morning or evening throughout this trial period while continuing their usual training programme.

Body measurements were taken and subjects provided reports of their dietary intake throughout the study. The results did not highlight any significant differences in body composition or performance measures between the two groups. In contrast to the results of the study above, for the subjects who continued with their usual training programme, the additional casein protein supplementation did not have a significant impact on body composition and did not affect fat mass.

Clinical Studies on Flax Seed Powder

Some early studies have been undertaken to investigate the potential health effects of flaxseed supplementation, but very few seem to have been performed with the aim of finding out whether or not the ingredient can contribute to weight loss. One study found that the substance could help to support healthy weight loss, but this trial was later retracted – suggesting that it was not reliable.

Clinical Studies on Acetyl L Carnitine

A few studies have also been performed to look at the impacts of L-carnitine on weight loss and body composition. Initial trials were performed on rats. One such trial, published in 2002, tested the hypothesis that L-carnitine can influence fat metabolism and improve body composition using rat subjects. The rats were given a very-low-energy diet; one group was given L-carnitine and the other was not. The rats lost a considerable amount of weight by the end of the trial, but there was no difference in weight loss between the carnitine and no-carnitine groups.

Few studies have been done using human subjects. One trial, published in 2000, looked at the effects of L-carnitine supplementation alongside aerobic exercise. This study involved 36 moderately overweight women. The subjects were matched by BMI and randomly assigned to one of two groups – an L-carnitine group and a placebo group. The subjects did not know which group they were in and took their allocated treatment every day for eight weeks as well as undergoing regular exercise. The results showed no significant differences in total body mass or fat mass, suggesting that L-carnitine might not have a notable effect on weight loss or fat burning as is sometimes claimed.

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Wake Nutrition Slimmer Shake Side Effects

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The official Wake Nutrition Slimmer Shake website does not mention any potential side effects related to the product. That is not however to say that the product will not cause any side effects. Most of the ingredients in the supplement are associated with some side effects when taken in certain quantities, and they are not all suitable for all potential users (such as pregnant and breastfeeding women). The ingredients are not typically linked with severe side effects in healthy people, but due to a lack of information regarding ingredient quantities, we recommend that you consult a doctor before taking the product if you have a health condition.

Side Effects Associated With Each Ingredient

Side Effects associated with Whey Protein Concentrate and Isolate

Whey protein is considered to be likely safe for most people in moderate doses. Taking high doses might cause some side effects, including bloating, stomach cramps, nausea, increased bowel movements, headaches, tiredness and reduced appetite. It is important to note here that we do not know how much whey protein is present in this product. Due to a lack of information, the ingredient should be avoided by pregnant and breastfeeding women.

Side Effects associated with Micellar Casein

Casein protein is not linked with any severe side effects, but the ingredient is not very well studied, meaning we don’t have much information on its safety. Due to this lack of information, it is recommended that you consult a doctor before taking if you have a health condition and avoid it entirely if you are pregnant or breastfeeding. Those with a milk allergy should also avoid this ingredient.

Side Effects associated with Pure Fine Oats

Oats are safe for most people in the amounts consumed in food. In higher quantities the ingredient is considered likely safe for most people. There is however an association with oats and excess gas and bloating. It is recommended that users begin by taking a small dose and increase it slowly to help your body get used to your oat intake and minimise these side effects. It is not recommended that you consume oats in supplements if you have a disorder of the digestive tract (including the oesophagus, stomach and intestines), since the oats may cause blockages in the gastrointestinal tract.

Side Effects associated with Flax Seed Powder

Flaxseed is believed to be likely safe for consumption by mouth by most people, though the ingredient might increase the amount the user needs to use the toilet. Other side effects are mostly related to the digestive tract and may include diarrhoea, upset stomach, nausea, constipation, abdominal pain, gas and bloating. It has been suggested that taking high doses of flaxseed could cause a blockage in the intestines; to reduce the chances of this, it is recommended that plenty of water be consumed when taking the supplement. The safety of flaxseed supplementation in the long term (over 12 weeks) is not known. Consult a doctor before taking this ingredient if you have diabetes, heart problems, a blood condition, digestive problems, a hormone-sensitive condition, or are pregnant or breastfeeding.

Side Effects associated with Whole Psyllium Husks

It seems that there are several different types of psyllium used in supplements; it is not clear which is used here, so we would recommend consulting a doctor before taking the ingredient if you have a health condition to discuss any potential interactions. ‘Natural psyllium’ has a list of associated side effects. These are mostly relating to the gastrointestinal tract and may include stomach cramps and gas. It is also thought to have the potential to cause blockages in the throat, so make sure that you take it with plenty of water.

Side Effects associated with Green Tea Extract

Green tea is generally thought to be safe when consumed in moderation as a beverage. It is thought to be possibly safe for most people when taken by the mouth for up to two years. In the short term, green tea extract has been associated with upset stomach and constipation. There has been suggestion that the ingredient can cause liver problems in the long term, though these reports have not been confirmed. In higher doses, it may cause side effects due to the caffeine content. Caffeine can cause a whole range of side effects, including: headaches, nausea, nervousness, anxiety, insomnia, increased heart rate and increased blood pressure.

Side Effects associated with Acetyl L Carnitine

Acetyl L-carnitine is thought to be likely safe for most people of good general health when taken by mouth. There are however some associated side effects; examples of these include: stomach upset, diarrhoea, nausea, vomiting, and seizures. It has also been reported to cause a ‘fishy’ odour on the breath, urine and sweat. Due to a lack of information, it is recommended that pregnant and breastfeeding women avoid taking excess L-carnitine, as well as those who suffer from seizures, kidney problems, or have an underactive thyroid.

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How To Use

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The official Wake Nutrition Slimmer Shake website provides virtually nothing in the way on instructions on how to use the product. It is noted that one serving is 40g of the powder, but how that powder should be consumed in not mentioned at all. Typically, the companies behind weight loss protein powder-type supplements recommend that the user add the serving of powder to 200ml of water or milk. Using a protein shaker, it is usually advised that this is mixed together well before being consumed immediately. It is not clear whether or not the company provide any more information on how to use the product with the shake itself when it is delivered to the customer.

The company also fails to provide any information regarding who the supplement is suitable for and what groups of people should avoid it. Since the product has not been subject to any clinical study and the ingredient quantities are not disclosed, it cannot be stated with any certainty that the supplement is safe for use. Based on the ingredients list, we would recommend that anybody who has a pre-existing health condition consult a doctor before use. We would advise that pregnant and breastfeeding women avoid the product entirely to be on the safe side.

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Who Makes It

This supplement is sold by the company ‘Wake Nutrition’. It is not clear whether the company manufactures the products itself or whether this is done elsewhere. There is no mention of where the products are manufactured or any manufacturing certificates/standards followed.

Information about the company on the official site is rather vague. It is stated that the company loves fitness and understands the lifestyle that comes with staying fit. They claim to have created a range of simple products to help customers get the bodies they desire. There is no mention of how long the company has been established or where they are based. Contact details are lacking entirely – there is no phone number, email address of postal address on the site – only an online form for customers to fill in and await an email reply.

The company sells a small range of supplement products, comprising two protein shake products, a capsule supplement, a teatox product and a coffee product. They are all claimed to aid weight loss and/or body composition. The site is also home to blog-type posts on lifestyle, diet and exercise. Key information is lacking from most of these product sites, including ingredient quantities and potential side effects/people who shouldn’t take.

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Where To Buy Wake Nutrition Slimmer Shake


There only appears to be one buying option for Wake Nutrition Slimmer Shake, and that is through the official product site. The supplement does not appear to be available on any other online supplement stores, on Amazon, or in any high street health retailers in the UK.

On the official Wake Nutrition site, the product is sold in a 1kg tub of powder. This appears to be the only option available. There are no different quantity options, but the powder can be purchased in two different flavours – vanilla ice cream or chocolate.

The 1kg tub costs £29.00 on the official website. It is also available to purchase with a shake for £30, with a shaker and a capsule product for £45.00, or with a shaker, capsule product and teatox product for £54.00.

As the product is not sold anywhere else, this is the cheapest (and only) place to purchased Wake Nutrition Slimmer Shake. Delivery for orders to UK addresses costs £4.99. This is for standard delivery, which takes 2-5 working days. There are no other options (such as one-day or nominated-day delivery). Free postage is offered on orders of over £45. There do not appear to be any options available for international delivery.

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Does Wake Nutrition Slimmer Shake Meet our Approved Criteria

Money-back-guarantee: No, there does not appear to be a 30-day money-back guarantee.

One-off payment: Yes, the payment methods seem to be safe and one-off. Customers can pay using PayPal.

Manufacturing Standard: No, there is no mention of any manufacturing standard certification.

Accompanying Diet Plan: No, there is no mention of a diet plan with this product.

Ingredients and quantities disclosed: Yes, the ingredients list is provided, but individual ingredient quantities are not.

Company contact details readily available: No contact details are provided for the company – only an online form.

Wake Nutrition Slimmer Shake does not meet our ‘Approved’ criteria because it fails to provide a moneyback guarantee.

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Overall Verdict

Wake Nutriton Slimmer Shake contains an array of protein and herbal ingredients as well as a mixture of vitamins and minerals, which may be beneficial for the maintenance of good general health. It is claimed to target weight loss in several ways, but these claims are not backed up by any scientific evidence. The product as a whole has not been clinically studied, though some of the ingredients have shown some potential in clinical studies when taken alongside a healthy diet and regular exercise. The company fails to disclose ingredient quantities and side effects associated with the product/people who should not take. Contact details are also missing for the company.

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