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Slim Zest – T5 Rapid Fat Burner

T5 Rapid Fat Burner from Slim Zest claims to provide an extra boost of energy and have fat burning properties to get rid of unwanted weight, although the stimulant content may cause side effects.

Below we have reviewed Slim Zest T5 Rapid Fat Burner against our review criteria to help consumers make an informed decision.

Slim Zest - T5 Rapid Fat Burner

Slim Zest - T5 Rapid Fat Burner Pros
  • Manufactured in the UK
  • Ingredients seem to target both mental and physical alertness and endurance
Slim Zest - T5 Rapid Fat Burner Cons
  • Can cause stimulant-related side effects
  • No clinical trials have verified its safety or success

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Slim Zest T5 Rapid Fat Burner Review

The focus of this product seems to be using a combination of stimulants to increase both mental and physical ability. The caffeine and l-tyrosine ingredients suggest an aim to improve the user’s cognitive alertness and physical stamina, whereas green tea is a supposed component of raising metabolism rates and burning fat. However, this heavy reliance on stimulants can cause a plethora of adverse side effects and the manufacturer’s product description implies that it should be used alongside a healthy diet and exercise.

Claimed weight loss benefits

Slim Zest’s T5 Rapid Fat Burner product claims to include fat-burning and metabolism-boosting agents, such as green tea, which may enhance the rate of losing excess fat cells. The other ingredients apparently act to heighten the user’s level of endurance and mental stimulation for a longer workout, as well as lower fatigue.

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How Slim Zest T5 Rapid Fat Burner Works

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This product suggests a focus on improving both mental and physical readiness. The caffeine anhydrous and l-tyrosine ingredients can purportedly work as mental stimulators, while green tea and citrus aurantium may target the improvement of the user’s metabolism rate. Reducing tiredness and boosting endurance during exercise are also supposed attributes of T5 Rapid Fat Burner. Its dosage of naringin supposedly lengthens the amount of time a stimulant, such as green tea or caffeine anhydrous, stays in the user’s system. However, the success of the product as a whole hasn’t been verified or studied, although each ingredient is examined below.

L-Tyrosine

L-tyrosine is an amino acid that functions as a foundation for building protein in the body, which helps the brain and nervous system work properly. It’s sometimes used to treat mental problems including depression, chronic fatigue syndrome (CFS) and attention deficit hyperactivity disorder (ADHD), although its success in aiding these ailments is debated. It infuences the production of neurotransmitters that affect the mental alertness of the brain, which could benefit exercise, but scientific support for its use in this area is limited.

Caffeine Anhydrous

Caffeine anhydrous does not contain excess water but functions almost identically to caffeine, although it may be more potent. Caffeine affects the adenosine receptors in the brain, which is how stimulation, rather than drowsiness, is experienced. Some suggest that it can incite and improve thermogenesis while also acting as an appetite suppressant, but this remains theoretical.

Naringin

Naringin supposedly works as an antioxidant, lipid-lowering and cholesterol-reducing element, which should help the user exercise if accurate. It’s also speculated that this ingredient functions as an aid to caffeine by increasing the amount of time it stays in the body, resulting in longer caffeine stimulation. However, research into naringin casts doubt on this theory’s validity.

L-Tryptophan

L-tryptophan plays an important part in the functioning of metabolism and development of organs in humans. Studies show that it works by being converted into 5-hydroxytryptophan (5-HTP) by the body after ingestion, then made into the hormone serotonin. Serotonin has a significant impact on mood levels and also functions by transmitting chemical signals between nerve cells, which may aid exercise. However, the amount of l-tryptophan in Slim Zest’s product is not definitively proven to cause this effect.

Citrus Aurantium

Citrus aurantium is commonly known as ‘bitter orange’ and contains different chemicals that influence the nervous system. This influence supposedly includes narrowing blood vessels, elevating hypertension and increasing heart rate, which may be why it is considered a weight loss contributor. Bitter orange contains synephrine which reportedly heightens energy levels by triggering alpha-adrenergic and beta-adrenergic receptors, which are responsible for sparking energy drive. Synephrine alkaloids could also lower gastric movement, which may help quell hunger pangs. However, research into these functions remains theoretical.

Green Tea

Green tea naturally contains folate, caffeine, potassium, magnesium and many antioxidants making it extremely useful throughout the medical world. It can work as a weight loss aid because its antioxidants and caffeine content purportedly speed up the metabolism, which results in a more rapid rate of calorie-burning. The catechins in green tea also supposedly function as cholesterol and blood pressure lowering agents, whereas its antioxidants are reported to help prevent the decline of nerve cells pertaining to dementia. However, these theories are often the result of short-term or non-human trials and findings from weight loss studies are insignificant.

Pyridoxine Hydrochloride

There is only 1.4mg of pyridoxine hydrochloride in Slim Zest’s T5 Rapid Fat Burner, so it won’t play a large part in the functioning of each daily dose but may still be worth examining. Pyridoxine hydrochloride is administered in a range of forms including tablet, capsule, solution and injection and is essentially a vitamin (B6) that can be found naturally in foods or manufactured in laboratories. It may help the successful functioning of fats, sugars and proteins in the human body, as well as the development of the skin, brain and nerves. However, it’s unclear what its use is as part of this diet aid.

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Key Slim Zest T5 Rapid Fat Burner Ingredients

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The amount of active ingredients in Slim Zest’s T5 Rapid Fat Burner implies that it is attempting to target a large area of weight loss factors. There appears to be a great many stimulants in T5 Rapid Fat Burner, such as green tea, citrus aurantium and caffeine anhydrous, which suggests that the product is concentrating on the increase of mental alertness and exercise endurance. However, this can be harmful to the body and there are no clinical studies to verify whether these ingredients complement each other as a weight loss supplement.

L-Tyrosine

L-tyrosine is both created naturally in the body and found in food products including: eggs, fish, meat and nuts. It’s used to make neurotransmitters, such as dopamine and epinephrine, which can have an effect on mood and motivation. However, the extent to which this influence will be experienced as part of T5 Rapid Fat Burner is not established. The body produces l-tyrosine from another amino acid called phenylalanine, although this is not found naturally in the body and must be consumed. A lack of phenylalanine in the diet can sometimes reportedly cause a lack of energy and even depression.

Caffeine Anhydrous

Caffeine anhydrous is fundamentally the same as caffeine, except it has no excess water. This may make it more powerful and effective, but also more dangerous than standard caffeine. Caffeine is native to South America and is found in the nuts, seeds and leaves of the coffee plant. It is a hugely popular stimulant and can be found in a large variety of beverages and foods such as tea, coffee, chocolate and soft drinks, whereas caffeine anhydrous is most typically found in supplements. It has been known to increase heart rate, change moods and alter energy levels, although this varies depending on the user’s tolerance and the caffeine quantity.

Naringin

Naringin is part of a family of flavonoids found in many citrus fruits, but it is most commonly recognised as the bitter flavour in grapefruits. Naringin is metabolised in the human body to become the separate, but related, flavanone naringenin and some studies have reported signs of its ability as an anti-carcinogenic, hypercholesterolemia prevention. It has also been analysed for its supposed ability to affect the absorption of some drugs, such as caffeine, in the intestines. However, many experiments reject this effect and many have been conducted on animals, which hinders their trustworthiness.

L-Tryptophan

L-tryptophan is an essential amino acid that the body uses as a base to build protein. The body is incapable of producing l-tryptophan itself, so it must be taken from its plant or animal source via food or supplements to have an influence on the body. It’s most commonly used as a medical aid to treat mental issues such as: insomnia, anxiety and attention deficit disorder (ADD), but its success hasn’t been scientifically proven and not all uses for it are approved by the US Food and Drug Administration (FDA). It is, however, considered an important element of healthy organ function.

Citrus Aurantium

The leaf, peel, fruit, juice and flower of the citrus aurantium, or bitter orange, plant are all used in medicine and the unripe fruit itself is even used in Indian cuisine. It can be taken orally for ailments such as an upset stomach and chronic fatigue syndrome, or put on the skin to help with swelling or infections. However, its success as a treatment is not well documented. The use of citrus aurantium as a weight loss aid has risen since the decline of ephedrine, because of its safety risks. Many supplements include citrus aurantium as a substitute for ephedrine because of its apparent potential to increase thermogenesis, although it is not yet known whether or not bitter orange is any safer than ephedrine.

Green Tea

Green tea, although native to China, is considered a staple part of many Asian countries and is now globally used in cosmetics, foods, beverages and supplements. Green tea has been used to treat minor ailments such as diarrhoea and vomiting, but is also supposedly able to reduce cancer and lower cholesterol thanks to boosting the body’s immunity and expelling its toxins. Despite the positive reviews of its health benefits, green tea has not been certified by the FDA for safety or usefulness and its risks, benefits and drawbacks remain essentially speculative.

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Clinical Studies

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Clinical studies are a valuable and insightful way to analyse the effectiveness of a supplement before purchasing. It’s often handy to be able to read the results of such an examination on the product as a whole, but Slim Zest’s T5 Rapid Fat Burner has not yet been subjected to any clinical trials or definitive studies. However, there has been research into its active ingredients individually that can be indicative of their potential in this product. However, this may not be proof that the element will be successful as part of T5 Rapid Fat Burner or that the ingredients will work well together.

L-Tyrosine

This study aimed to establish the effect l-tyrosine has on improving cognitive performance and reducing blood pressure. A total of 21 cadets completing a military combat training course were used as subjects in the trial. Ten were given five daily doses of a protein-based drink with 2g of tyrosine and the other 11 drank a carbohydrate-based beverage with an equal number of calories (255 kcal), but no l-tyrosine. The results indicated that those given the l-tyrosine drink were more successful at memory tasks, better at tracking missions and had lower systolic blood pressure. This implies that tyrosine helps reduce anxiety and tiredness, but no effect on general mood was evident.

Caffeine Anhydrous

This study analysed the effect of caffeine on the physical performance and metabolism rate of eight, trained cyclists. Each athlete drank either caffeine, instant coffee, instant decaffeinated coffee or a placebo one hour before exercising. The performance times of those who drank either caffeine or instant coffee were around 5% faster than the others, which indicates that caffeine can support physical performance. However, the percentage difference is not greatly significant.

Naringin

This study examined the ability of naringin in lowering plasma lipids and boosting antioxidant activity in subjects suffering from high cholesterol. Half of the group of participants had hypercholesterolemia and the others had healthy cholesterol levels. Each person received 400mg of naringin and regular meals every day for eight weeks. The results suggested that naringin lowered lipoprotein cholesterol by 17% while enhancing antioxidant enzymes in patients suffering from high cholesterol levels. However, no significant changes were found in the healthy subjects, which imply that naringin may only be effective on subjects with high cholesterol issues.

L-Tryptophan

One of the most influential aspects of l-tryptophan is its ability to create serotonin and consequently positively affect mood. This study demonstrates the success of l- tryptophan on subjects suffering from premenstrual dysphoric disorder, symptoms of which include tension, sadness and low self-esteem. An l-tryptophan dose of 6g per day was given to 37 participants with the illness and a placebo was administered to the other sufferers. The trial lasted 17 days and results suggested that those receiving l-tryptophan felt more positive with reduced feelings of tension, depression, irritability and mood swings. The effect l-tryptophan appears to have on the production of serotonin and enhancement of mood levels merely indicates that users might be more invigorated to workout, but there’s no proof that this will occur as a result of this T5 Rapid Fat Burner.

Citrus Aurantium

This extract looks at the many human studies examining the effectiveness and safety of bitter orange that included approximately 360 people of various weights. Solutions containing bitter orange, the main protoalkaloid of which is p-synephrine, were administered for up to 12 weeks to 44% of participants, while the rest were given a concoction of other ingredients plus some p-synephrine. The results suggest that p-synephrine, either alone or in the mix, raised the rate of metabolism and energy level without causing adverse side effects. However, only a small weight reduction was evident and the short length of the trial doesn’t give it a firm standing.

Green Tea

This study examined whether green tea is able to help maintain the weight that is lost after dieting in overweight or moderately obese people. A total of 104 men and women were used in the trial, which consisted of a very low-calorie diet for four weeks followed by 13 weeks of either green tea or a placebo. Results showed that there was no substantial difference between the rates of weight regain after the diet, despite the consumption of green tea. This implies that although green tea may help lose weight, it won’t necessarily be a long-term result.

Pyridoxine Hydrochloride

Not many clinical studies into this ingredient exist. However, this experiment looked at the fat-burning ability of http://www.drugs.com/dict/leucine.html leucine combined with a nutrient containing pyridoxine (vitamin B6). This mix was administered to obese participants and resulted in substantial fat loss over the 24-week period, which was attributed to fat oxidation. However, there’s very little pyridoxine hydrochloride in this product and no leucine to work alongside it.

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Slim Zest T5 Rapid Fat Burner Side Effects

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The possible side effects of any supplement or medication should be noted before taking it, as some people may have a lower tolerance to certain ingredients than others making them more susceptible to adverse outcomes. The high caffeine content and use of stimulating elements in Slim Zest’s T5 Rapid Fat Burner suggest that harmful side effects, particularly relating to caffeine, might be a possibility. Some of the product’s ingredients supposedly work with each other for their effect or are quite similar, which may heighten the potency of their risk. However, no studies have analysed the product’s safety, so each ingredient has been examined below.

L-Tyrosine

L-tyrosine is a naturally-produced amino acid that is relatively safe, but it has been reported to cause headaches, gastric discomfort and a rise in the level of thyroid hormones in some users. Caution should also be used if taking it alongside medication such as certain anti-depressants, as it may cause the blood pressure of the user to rise.

Caffeine Anhydrous

Extra caution should be used when taking supplements containing caffeine anhydrous, since it is a more powerful form of caffeine. This drug can cause an array of adverse side effects, including diarrhoea, vomiting, tremors, headaches, dehydration, irritability, dizziness, sleep troubles and a fast heart rate. Vast quanitites of the drug may also cause confusion, convulsions, delirium, muscle trembling and abdominal pain, although it’s doubtful that enough is contained in T5 Rapid Fat Burner to cause these ailments.

Naringin

Naringin is a natural ingredient that is considered safe in the medical world. However, it has been noted in some studies to have an influence on sugar levels in the blood and so should perhaps be treated with caution if used by diabetics. The highly-speculated notion that it increases the potency and life-span of other drugs and stimulants in the body should also be considered, although evidence for this is scant.

L-Tryptophan

L-tryptophan possibly has the most suspicious background out of all this product’s ingredients in regards to safety and side effects. The FDA recalled any supplement containing more than 100mg of l-tryptophan in 1989 after a connection with an outbreak of Eosinophilia Myalgia Syndrome (EMS) was established. This caused 38 deaths by 1990 and the FDA has limited the availability of the element in the US since the outbreak, although there have been no reported cases of EMS within the past several years. Side effects such as fever, diarrhoea, agitiation, sweating, vomiting or shaking may be signs of an overdose of l-tryptophan, but the 35mg dose in a capsule of this product shouldn’t cause this.

Citrus Aurantium

Citrus aurantium, especially in the dose amount provided in Slim Zest’s product, is thought to be relatively safe to use. However, some adverse side effects may occur such as headaches, irritability and heart palpitations. This is predominantly due to the stimulating components of bitter orange, particularly synephrine, which may also negatively interfere with other medication and anaesthetics. It might be considered a safer option than ephedrine, but it can still be harmful in high doses, potentially leading to heart attacks and strokes.

Green Tea

Green tea could hold several health benefits, but it can still cause some harmful side effects depending on the user and the dose. Some harmful side effects of it include heartburn, headaches, anxiety, irregular heartbeats or an upset stomach and it should be avoided if the user has kidney disease, heart issues or high blood pressure. The catechins in green tea have also been blamed for causing hepatotoxicity, which is chemical-driven liver damage. However, most dangerous side effects are avoided if the ingredient isn’t abused and it should be easily tolerated as part of T5 Rpaid Fat Burner.

Pyridoxine Hydrochloride

Generally, few negative side effects have been reported regarding pyridoxine hydrochloride. The amount in this product should ensure any possible adverse repurcussions are not experienced, but these may include hypersensitivity, allergic reaction and numbness of the extremeties. However, this is usually only as a result of consuming very large quantities of pyridoxine.

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How to Use

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The Slim Zest company website clearly present instructions for using its T5 Rapid Fat Burner product and begins by stating that one capsule per day should be taken with a full glass of water. However, it adds that the user can proceed to take two capsules in the morning and one in the afternoon, if they desire. Taking one capsule approximately half an hour before exercising may be helpful to boost the user’s workout, according to Slim Zest, but no more than two capsules at one time or three capsules in one day should be ingested. The company also warns those who have trouble sleeping should not take a dose after 3pm. Slim Zest advises that the user consult a healthcare professional if they have any current medical conditions or are taking any other mediation, as the product may cause interference.

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Who Makes It?

The manufacturer of T5 Rapid Fat Burner is Slim Zest, which is a dietary supplement company based in London. All of its products are made in the UK and it also offers a reasonable range of other diet pills including Carb Blocker, Colon Cleanse Detox and Green Coffee Bean Extract Max. It appears relatively easy to contact the company via the website’s Contact Us section, as well as its Facebook and Twitter pages. The company doesn’t seem to have received any negative reviews regarding its service and most of its products have been given favourable ratings on sites selling its products, including T5 Rapid Fat Burner. Slim Zest appears to be a reputable company. However, it is quite a newly-established firm.

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Where to Buy Slim Zest T5 Rapid Fat Burner

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T5 Rapid Fat Burner is easily bought directly from the manufacturer itself via its Shop Online page. Slim Zest sells 120 capsules for £50 or 60 capsules for £30 but both include free postage within the UK or £5 for international shipping. A 120-capsule bottle can be bought from Ebay for £34.45 with free delivery, but the cheapest price seems to be from Amazon, which offers 120 capsules of Slim Zest’s T5 Rapid Fat Burner for £26.99 and free delivery in the UK. Each one of these retailers is usually viable and trustworthy. However, it doesn’t appear possible to purchase the Slim Zest product from high street stores.

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Does Slim Zest T5 Rapid Fat Burner Meet our Approved Criteria

Money-back-guarantee: No. The website does not detail any money-back-guarantee scheme.

One-off payment: Yes, it is a one-off payment.

Manufacturing Standard: There is no mention of manufacturing standards.

Accompanying Diet Plan: There does not appear to be a diet plan.

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

Company contact details readily available: Yes, full contact details are provided on the official website.

Slim Zest T5 Rapid Fat Burner 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

Slim Zest’s T5 Rapid Fat Burner includes a variety of stimulating ingredients rather than using a high dosage of only a couple. Reviews from users have also been chiefly positive and there is some support for the weight loss potential of each ingredient individually. Nevertheless, its focus on boosting energy and enhancing mental alertness for exercise will arguably be short-lived, as many surges of motivation tend to be, and the extent to which it can increase the rate of thermogenesis is unknown. Unfortunately the stimulant content may also cause side effects, and makes the product unsuitable for some groups of people.

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One response to “Slim Zest – T5 Rapid Fat Burner”

  1. Colette says:

    Have brought slimzest in the past I really like this product and would like a lot more information on this product. I’m intendeding on buying the whey from Amazon please can u give me some information on this product.

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