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Medi-Evil Excalibur

This weight loss supplement has been created with athletes, bodybuilders, and those who exercise on a daily basis in mind. The ingredients have however been associated with side effects, some severe.

Below we have reviewed Medi-Evil Excaliber against our review criteria to help consumers make an informed decision.

Medi-Evil Excalibur Review

Medi-Evil Excalibur Pros
  • Unique product design in terms of branding
  • Contains a selection of popular ingredients for weight loss
Medi-Evil Excalibur Cons
  • Serious side-effects associated with some of the ingredients
  • Little evidence that the ingredients will help to aid weight loss

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Medi-Evil Excaliber Review

Medi-Evil Excalibur is packaged in a unique bottle and box. However, that does not necessarily mean that the product itself will be any more or less effective than something that has been created to look just like every other product on the market. It is claimed to target metabolism boosting, fat burning, and appetite suppression through the use of a number of ingredients, including several stimulants. Some of these stimulants have been associated with severe side effects and the product will not be suitable for everybody.

Claimed weight loss benefits

The manufacturers make very clear claims for what their product is able to do on their website. They claim that it can help to boost your metabolism using a thermogenic reaction, stop you from experiencing hunger cravings by suppressing your appetite, and allow you to get more from every workout by increasing the rate at which you burn fat. In other words, it is advertised as a fat burner, an appetite suppressant, and a metabolism booster. There is no diet plan associated with this supplement however, nor does it block carbohydrates in any way.

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How Medi-Evil Excaliber Works


Medi-Evil Excalibur is advertised to work through fat burning and metabolism boosting, which is supposedly caused by the addition of a number of ingredients, such as caffeine, green tea, bitter orange, and capsicum. As several are stimulants, these ingredients may also offer energy, helping to keep you going for longer when you exercise. Other elements might also provide an appetite suppressant effect

It is intended not just for weight loss but also as an aide for those who are training or muscle building, and therefore it has several different areas in which it is said to be effective. It is described as a “thermogenic intensifier” on the official website, and is said to speed up the metabolism as well as boosting energy in order to help with those who are looking to enjoy a workout after taking their supplement. On top of this, it will allegedly help to increase your protein uptake as well as aiding the digestion of carbohydrates, meaning that you might shed weight at the same time as putting on muscle if you continue to work out while you are taking a course of this supplement.

Green Tea

Green tea is often used in order to boost energy and speed up the metabolism. These effects are typically attributed to two features of green tea: the caffeine that it contains and polyphenol catechins such as epigallocatechingallate (EGCG).

Bitter Orange

Bitter orange is also a central nervous system stimulant and is claimed to have similar benefits to caffeine. It is said to increase the rate of metabolism and in turn fat burning. Bitter orange has also been associated with appetite suppression in the past.


Caffeine is usually advertised as having the potential to boost energy and speed up the metabolism. It is common to weight loss and workout supplements for these reasons. It is thought to achieve these effects through stimulation of the central nervous system.


Guarana is said to contain a lot of caffeine and as such, is described as having similar weight loss effects. As a stimulant, it might boost central nervous system function, which has been associated with increased energy levels and a higher metabolism.

L-Tyrosine and L-Carnitine

L-Tyrosine and L-Carnitine are amino acids that have sometimes said to be beneficial for weight loss and also digestion. As amino acids, they are used to make protein, which can aid the build up of muscle. They have been said to help with fat burning in the past.


Capsicum is an ingredient extracted from red peppers and is thought to cause thermogenesis in the body. This means that it supposedly causes an increase in the internal body temperature, which, in turn, is said to boost the metabolism and increase fat burning.

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Key Medi-Evil Excaliber Ingredients


The ingredients and the quantities are provided on the official website by the manufacturers. There is a selection of different ingredients that are often claimed to aid weight loss, some of which are stimulants.

Green Tea

With two capsules containing a total of 500mg, green tea is one of the two main ingredients in this supplement. Green tea is made from the leaves of the Camellia sinensis plant and is said to have a great range of health benefits owing to the presence of antioxidant compounds. Green tea also contains caffeine and is a very common ingredient to weight loss supplements.

Bitter Orange

Bitter orange is the other key ingredient in Medi-Evil Excaliber, also present at 500mg in a two-capsule serving. Bitter orange is also known by its scientific name, Citrus aurantium, and is used mainly in traditional medicine as a weight loss aid. The ingredient contains the chemical synephrine; this chemical is thought to be the cause of the potential weight loss effects, but has also been associated with severe cardiovascular side effects in the past.


Caffeine is a common stimulant that is found in everyday products such as tea and coffee. The ingredient is best known for providing a boost in energy and concentration levels. It is also thought to have weight loss effects, but can cause side effects, particularly for those who are sensitive to the substance.


Guarana extracted from the seeds of the guarana plant and is said to contain a significant amount of caffeine. It is therefore most commonly used as a stimulant ingredient to boost energy levels. The ingredient has been associated with weight loss, though evidence to this effect is lacking.

L-Tyrosine and L-Carnitine

L-Tyrosine and L-Carnitine are both amino acids. Amino acids are known as the building blocks of protein, which is the basis of muscle. They might therefore help to aid muscle growth and have sometimes been associated with weight loss, but there is very little evidence available to back these claims.


Finally, the product contains 25mg of capsicum, which is extracted from red peppers. This ingredient has been used on the skin to reduce pain and has also been said to help with weight loss thanks to its potential thermogenic effect in the body.

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Clinical Studies

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Clinical studies can be very important when it comes to looking at diet pills, as they can tell us what scientists and researchers have discovered when looking at the ingredients in controlled environments. The ideal situation is to find a number of human trials that have reached the same conclusion. There have been no clinical trials conducted into the supplement itself, which means that we can only rely on the evidence of the ingredients, though we may not necessarily know how they work in conjunction with one another.

Green Tea

Green Tea is one of the main ingredients listed for this product, and while this seems to help people to lose weight, clinical trials have been more or less inconclusive on this point. It can help to boost the metabolism and fat burning according to some studies, but other studies did not find any positive effects at all and therefore we cannot say much about this ingredient one way or the other.


Research that has been done into caffeine does suggest that it may help to increase physical endurance and put off exhaustion, helping you to exercise more effectively – but research also suggests that it does not help with short-term and high-intensity exercise such as lifting. This may be an issue for those who are considering using this supplement as an aide while they are weightlifting or bodybuilding. Research has suggested that caffeine can be useful for reducing weight in the short term when combined with ephedra, which is not present in this particular supplement.

Bitter Orange

Bitter orange is another of the ingredients that has a very strong presence in this supplement, with 500 mg in every single capsule. However, studies have disagreed on whether bitter orange has any effect on weight loss, as several studies have found that this ingredient does not help people to lose weight at all. There was one limited study which suggested that it could help when combined with caffeine and St Johns wort, so long as it was combined with a low calorie diet and exercise, but based on this limited evidence we cannot say for sure that it will be effective at all.


When we look at guarana, another one of the ingredients contained within this supplement, we can see a similar situation. There has been some evidence that specific combinations of this ingredient with other elements could help to reduce weight when in combination with a low-fat diet, but beyond this there has been no suggestion that it could be effective in this area.

L-Tyrosine and L-Carnitine

There is no strong evidence that either of these ingredients will help in the area of weight loss or athletic performance. Studies into L-Carnitine supplementation suggest that the ingredient is unlikely to have any effect on metabolism or athletic performance.

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Medi-Evil Excaliber Side Effects

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Unfortunately, most of the ingredients that are included in Medi-Evil Excalibur can produce side effects for some people, so this means that the list is long and varied. Some of the side effects you may experience include: headaches, nervousness or anxiety, irritability, insomnia, vomiting, diarrhoea and stomach pains, irregular heartbeat and rapid breathing, heartburn, tremors, and dizziness. Some of these side effects might be severe in some users.

Green Tea

Green tea is one of the main ingredients, and this could give you side effects such as headaches, nervousness or irritability, problems with sleep, vomiting, diarrhoea, an irregular heartbeat, tremors, heartburn, dizziness, ringing in the ears, convulsions, and confusion.


Caffeine is very closely related to green tea and therefore has many of the same side effects, but it can also bring additional risks such as stomach irritation, increased respiration and heart rate, anxiety, chest pains, and even more serious conditions in larger doses. This is one of the reasons why it is very important not to exceed the recommended daily dosage that is set out by the manufacturers.

Bitter Orange

Bitter orange, when taken in conjunction with stimulants such as caffeine and green tea, increases the risk for severe side-effects such as an increased blood pressure, fainting, heart attacks, strokes, migraines and cluster headaches, increased sensitivity to the sun, and more.


Guarana is said to have such a high level of caffeine content that is considered to be potentially deadly when taken in high doses or over the long term. You might suffer from the same side effects as taking caffeine itself from this ingredient, as well as additional tremors, delirium, pain when urinating, and diuresis.

L-Tyrosine and L-Carnitine

L-Tyrosine is likely to be safe in small doses, particularly for the short term, but could cause a small amount of side effects. These include nausea, headaches, fatigue, heartburn, and joint pain. When it comes to L-Carnitine, you may experience side effects such as nausea, vomiting, stomach upset, heartburn, diarrhoea, and seizures – and also the unusual effect of causing the urine, breath, and sweat to have a fishy odour.


Capsicum can cause some side effects such as irritation to the skin, burning, and itching. These are more likely when it is used in a way that puts it into contact with this indirectly, and when taken by mouth the short term side effects can include stomach irritation, stomach upset, sweating, flushing, and a runny nose. The long periods of time, it is possible in rare cases to see side effects such as damage to the liver or kidney.

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How to Use

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The advice of Black Knight Supplements is that you should take one or two capsules in the morning one hour before you eat food, and you should do this every day for six days in a row. Finally, on the seventh day, you should take a rest, before starting the process all over again. They also advise that if you find the capsule to be too large to swallow, you can simply separate the shell and pour the contents into a small amount of water to take it this way.

Only adults should take this supplement, and they also warn that if you are an athlete you may wish to consult your governing body before you take Medi-Evil Excalibur. This is to ensure that none of the ingredients would be prohibited during drug testing at events and competitions. In addition, we would not recommend this supplement for pregnant or breastfeeding women, those under 18, or those who have a history of cardiovascular problems. Consult a doctor before taking if you have any pre-existing medical conditions or are taking any medications.

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Who Makes It?

The company that makes Medi-Evil Excalibur is called Black Knight Supplements, and they have a website that you can browse if you want to find out more about their products. They claim there that they are planning to launch a range of further sports nutrition products in the future, though as yet there are no details on this.

They claim to have a number of athletes who are part of their team, though as always it is unclear as to whether these athletes have been paid to endorse the supplement or not. They include UFC fighter Luke Barnatt, boxer Tony Conquest, bodybuilders Jaime Bishop and Oke Ememe, wrestler Zaid Khan, and personal trainer Kirsty Smith. You can find them with a long list of distributors and stockists.

You can also contact them very easily from their website, as they have a contact form for you to fill in and send off with any questions or comments that you may have . If you prefer to contact them in other ways, they also have a street address and a telephone number that you can use. There is a page of user reviews, though these are likely to be the best of the bunch rather than a truly honest look at the full spectrum of reviews that they may receive.

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Where to Buy Medi-Evil Excaliber


There are plenty of places where you can buy Medi-Evil Excalibur. Your first port of call may well be the main website which is run by the manufacturers themselves, Black Knight Supplements, although this will also be the place where you find it available for the highest price, at £49.99 for 90 capsules. . They also have a three for the price of two deal, which will save you an additional £49.99 when ordering three bottles at once, or a two capsule sachet to try the product out for just £2.49. Should you wish for a larger sample size, you can try five sachets for £9.96.

Other options that you could go for include Dolphin Fitness at £24.95, eBay with various prices, Amazon at £26.98, and plenty of nutrition or health stockists on the internet. At this time, we have not been able to find a shop that sells Medi-Evil Excalibur that you can visit in person.

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Does Medi-Evil Excaliber Meet our Approved Criteria

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

One-off payment: The product appears to be sold using a one-off payment on the official website.

Manufacturing Standard: There is no mention of any official manufacturing standards.

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

Ingredients and quantities disclosed: A full ingredients list is provided.

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

Medi-Evil Excaliber does not meet our ‘Approved’ criteria as there is no money-back guarantee or diet plan and some information is lacking from the official website, including manufacturing standards.

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Overall Verdict

This product is targeted at an athletic audience, but is claimed to aid weight loss through fat burning, metabolism boosting, and appetite suppression. Most of the ingredients in the supplement have been associated with weight loss, though clinical studies into their potential effects are typically inconclusive and still in the early stages. Some of the stimulant ingredients might cause severe side effects; bitter orange in particular has been associated with adverse events such as stroke and heart attack. The product will therefore not be suitable for everybody and we would recommend that you consult a doctor before taking it.

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