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T5 Raspberry Ketone

T5 Raspberry Ketone is claimed to carry out extensive weight loss owing to the presence of raspberry ketones; raspberry ketones have however not been conclusively proven to aid weight loss.

Below we have reviewed T5 Raspberry Ketone against our review criteria to help consumers make an informed decision.

T5 Raspberry Ketone Review

T5 Raspberry Ketone Pros
  • Serum application should be easy to use
  • The main ingredient has been subject to preliminary testing
T5 Raspberry Ketone Cons
  • None of the ingredients have been proven to aid weight loss
  • Contains the potentially dangerous ingredient, bitter orange (synephrine)

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T5 Raspberry Ketone Review

T5 Raspberry Ketone is a weight loss supplement that is claimed to work through the prowess of raspberry ketone, which is an ingredient that is said to boost the metabolism and increase fat burning. Raspberry ketone is believed to increase the presence of a hormone called adiponectin, which is believed to be useful when it comes to metabolism of fat and subsequent weight loss.

Claimed weight loss benefits

T5 Raspberry Ketone makes two claims in particular. The first of these is that it is able to carry out fat burning via the oxidation and metabolism of fat. The second is that it is able to carry out metabolism boosting and thus increase the rate at which reactions within the body take place.

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How T5 Raspberry Ketone Works

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As aforementioned, T5 Raspberry Ketone aims to carry out two chief effects. The first of these is fat burning, and the second is metabolism boosting. Let us look at each of these one by one.

The first effect, which is that of fat burning, is thought to be brought about by increasing the amount of a hormone called adiponectin. Adiponectin is purportedly able to metabolise fats efficiently. What this is said to mean is that the higher the level of adiponectin that you have in your body, the more the fat that you will be able to burn consequently. It is believed that raspberry ketone is able to have a dual effect: on the one hand, it supposedly carries out the suppression of the accumulation of fat, whereas on the other hand it is said to be able to increase the activity and efficiency of fat burning indicators.

The second feature of this particular weight loss supplement is metabolism boosting, and that is also believed to be brought about by the presence of raspberry ketone. This can, in theory, also be attributed to adiponectin, as this hormone is supposedly able to increase the rate of cell activity. This hormone supposedly specifically targets the metabolism of fatty acids present within fatty cells, and this purportedly helps in contributing to the process of metabolism boosting.

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Key T5 Raspberry Ketone Ingredients

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Raspberry Ketones

Raspberry ketone is a chemical found in berries as can be gauged from the name, and it is responsible for the aroma attributed to them. It is associated with features of weight loss along the lines of increasing lean body mass, boosting metabolism, and encouraging the burning of fat.

Bitter Orange

Known technically as Citrus aurantium, Bitter Orange is derived from a tree. It is believed to be useful in terms of weight loss and weight management owing to the containment of synephrine. The intake of synephrine, the active chemical in bitter orange, is associated with positive levels of metabolism boosting and increased energy expenditure as well. It is also believed that intake of bitter orange may suppress the appetite, though we do not have conclusive evidence in this regard.

L Carnitine

L Carnitine is believed to be useful for purposes of weight loss as it is thought to be involved in the process of fat burning. This is because when it enters the bloodstream, it is broken down to carnitine. It is believed that intake of carnitine allows for oxidation of fat to be carried out at higher levels and with a greater level of efficiency.


Guarana is native to the regions of South America. It is rich in caffeine content. Therefore, it is used as a part of energy drinks as well as weight loss products owing to the fact that it is supposedly capable of providing energy. It is held that intake of guarana allows for higher rates of release of fat into the bloodstream. This is the process of lipolysis, and essentially by increasing the rate at which lipolysis takes place, this particular ingredient is said to allow for more fat burning to be achieved.

Green Tea

Green tea has been used for centuries for its supposed health and weight loss benefits. There are several reasons for this. The ingredient contains a large amount of antioxidants, which are popularly associated with two particular functions within green tea. These substances are said to result in the process of thermogenesis. Thermogenesis is the process by which heat is created within the body, and it is believed to allow for higher rates of metabolism to be achieved. This synthesis of energy is thought subsequently to result in the burning of fat at high rates.

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Clinical Studies

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It appears that this particular weight loss supplement does not have validity as a whole. This is because the official website makes no mention of scientific studies whatsoever. In such a situation, we turn to individual ingredients and see if they have clinical validity associated with them. Let us look at each of these one by one.

Raspberry Ketone

For this particular ingredient, we came across a study to determine whether raspberry ketone has any association with obesity. This particular study involved mice as participants and involved administering them high fat diets for a period of 15 weeks. The breakdown was as follows: for the first 10 weeks, these mice were administered raspberry ketone in concentrations of 0.5, 1 or 2 % while in the last 5 weeks they were administered raspberry ketone in concentrations of 1%. When the study terminated and the results came out, they demonstrated a decrease in the quantity of accumulated fat even though the mice had been fed with a fairly high fat content for the duration of the study.

In addition, the intake of raspberry ketone was also believed to lead to a decrease in the triacylglycerol content. Finally, raspberry ketone decreased the rate at which lipase was converted into lipid droplets within the fat cells of rats. Therefore, raspberry ketone does have a small amount of clinical validity; however, we ought to be considerably careful as this particular study was conducted on mice and therefore we cannot simply replicate all assumptions for humans as well.


For this particular ingredient, we were able to come across different sets of studies. The purpose of the first of these was to determine the effect of a combination of yerba mate, guarana and damiana on the rate of gastric emptying. The purpose of the second was to determine the effect of the same combination on weight loss over a period of 10 days and 45 days as well as weight maintenance over a period of 12 months. 7 healthy volunteers were used to investigate the outcomes with reference to gastric emptying.

When the results came out, they demonstrated that the intake of the mixture led to a prolongation of gastric emptying by 20 more minutes. Next, to determine weight loss the researchers used 44 and 47 participants for a duration of 10 and 45 days consecutively. The results demonstrated weight loss for both groups. Meanwhile, to determine weight management, 22 participants were used. In this particular scenario, the results showed fairly consistent weight levels. Therefore, this particular ingredient did good on all indicators essentially. However, it needs to be kept in mind that the study did not involve guarana alone; instead it involved a mixture of guarana, yerba mate and damiana and so we have to be careful before attaching all outcomes to guarana solely.

Citrus Aurantium

This ingredient is also known quite popularly as bitter orange. For this particular ingredient, we found a study which involved a total of 360 obese participants. The total duration of the study was 12 weeks. 44 percent of these participants consumed synephrine alone, while the remaining 56 percent consumed it together with several other ingredients. When the results came out, they demonstrated that intake of this particular chemical resulted in an increase in metabolism as well as an increase in energy expenditure. The results also showed modest levels of weight loss. Therefore, this particular ingredient appears to have clinical validity associated with it.

For more information, we recommend you read our Bitter Orange: Weight Loss Wonder or Naturally Nasty? article.

Green Tea

For this particular ingredient, we were able to come across different set of studies as well. The first of these were studies which were conducted for a period of 12 to 13 weeks in Japan. Their purpose was to determine whether intake of green tea can positively influence weight loss. When the results came out, they demonstrated a range of weight loss from 0.2 kg to 3.5 kg. Meawhile, the second set of studies was conducted outside Japan for around the same duration. The results of these studies demonstrated difference of a mean weight loss of 0.04 kg.

For more information, we recommend you read our Green Tea Weight Loss article.

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T5 Raspberry Ketone Side Effects

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The official website gives the impression that there are no side effects associated with this particular weight loss supplement owing to the fact that it has natural ingredients. While it indeed has natural ingredients, it is not free from side effects and these ingredients are instead capable of manifesting several side effects. Let us look at each of these one by one.

Green Tea

This particular ingredient contains caffeine. Caffeine is associated with several side effects. Noticeable amongst these are anxiety, nervousness, tension and depression. Caffeine also causes nausea, vomiting, as well as cluster headaches and migraines. Other noticeable side effects are palpitations, ringing in the ears and rapid rises in heart beat and blood pressure.


Side effects associated with guarana are similar. For instance, it can cause insomnia, nervousness and restlessness, as well as stomach irritation, nausea and vomiting. It can also cause rapid breathing, diuresis, delirium, as well as agitation. Lastly, it may cause ringing in the ears, pain while urinating, irregular heartbeats and stomach cramps.

For more information, we recommend you read our Green Tea Weight Loss article.

Raspberry Ketone

The essential problem with raspberry ketone is that it is chemically similar in composition to a substance called synephrine. Therefore, it may be capable of exhibiting the side effects associated with synephrine. Noticeable amongst these are feelings of jitteriness, as well as rapid rises in heart beat and blood pressure. Furthermore, this particular ingredient may also cause shakiness as well as palpitations.

L Carnitine

Side effects associated with this particular ingredient include nausea, vomiting, stomach upset and heart burn. It may also occasionally cause diarrhea, seizures as well as breath, sweat and odour to have a bad odour. Lastly, this particular ingredient can result in making the thyroid considerably under active, resulting in a condition known as hypothyroidism.

Bitter Orange

Bitter orange is often used as a replacement for the now-banned substance, ephedra. It has been said that bitter orange may not be any safer than ephedra, and the ingredient has been associated with a number of severe side effects, including heart attack and stroke in otherwise healthy individuals. It may cause increases in heart rate and blood pressure, and could be dangerous for anybody with a pre-existing cardiovascular condition.

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How to Use

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This weight loss supplement does not come in the form of a pill or capsule. Instead, it is taken in a liquid form, as a serum. The official website gives us information in this regard. You are required to take the product once a day; you should fill the pipette, dispense it under the tongue and hold for about 5 seconds before doing so. The purpose of dispensing under the tongue is to allow the liquid to penetrate into the blood vessels that are tightly packed under the tongue. The manufacturers do not tell us what is the most appropriate time of the day to take this weight loss supplement.

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Who Makes It?

It appears that the company behind this particular product is Biogen Health Science. It specializes in a vast variety of health and weight loss products, with T5 Raspberry Ketone being just one of them.

We were able to find out that the company is based in Hertfordshire in the United Kingdom. The official website of the product provides a postal address as well as a telephone number for contacting the manufacturers. In addition, there is the option of emailing the manufacturers. It appears that the company is open when it comes to information about itself, and is concerned about the delivery of customer service.

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Where to Buy T5 Raspberry Ketone


First up you have the option of purchasing from the official website. If you wish to purchase a single bottle equivalent to a one month supply, you have to pay a price of £18.65. If you purchase two bottles together, the total price you pay is £31.95. In addition, you also receive a free T5 Fat Burner Patch. Meanwhile, if you purchase three bottles together, you pay a total price of £44.45 and avail the T5 Fat Burner Patch yet again as well as free detox gold. These two amenities are also provided if you avail the other two options of purchasing 4 bottles or 6 bottles together, paying prices of £53.95 and £65.95 respectively. So essentially, the price per bottle goes down if you purchase more bottles together and this is quite cost effective if you wish to buy in bulk.

The second option is purchasing from a third party supplier. The most reliable one in this regard is Amazon, where you pay a total price of £11.99. In addition, shipping within the United Kingdom is entirely free.

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Does T5 Raspberry Ketone Meet our Approved Criteria

Money-back-guarantee: No money-back guarantee is mentioned by the company.

One-off payment: Yes, there does not appear to be an auto-enrollment 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: Ingredient quantities do not appear to be provided.

Company contact details readily available: Yes, these details are provided.

T5 Raspberry Ketone does not meet our ‘Approved’ criteria as there is no money-back guarantee or diet plan and information about ingredient quantities is not provided.

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Overall Verdict

Some of the ingredients in this product have been the subject of some preliminary testing, but the main ingredient has only been tested on small mammals and even then, has produced mixed results. The product as a whole has not been clinically tested and may cause side effects for some people. Whilst the official website does not run an auto-payment scheme, there is some information lacking. For example, there is no money-back guarantee and ingredient quantities are not provided. One ingredient in the product, bitter orange, has been associated with life-threatening side effects, particularly when combined with caffeine as is the case in this supplement.

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