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Optimum Nutrition Mega Fat Burners

Optimum Nutrition Mega Fat Burners is a supplement that promises its users to help them reduce their body weight through fat reduction and appetite suppression. Although the key ingredients appear to reduce fat in the body, there do not appear to have been any studies carried out on the product.


Optimum Nutrition Mega Fat Burners Pros
  • Manufacturing company seems of a credible nature
  • Some of the key ingredients have been clinically proven to aid weight loss
  • Targets various areas of weight loss
  • Key ingredients can improve other areas of health
Optimum Nutrition Mega Fat Burners Cons
  • Key ingredients may carry some uncomfortable side effects
  • No evidence of any clinical testing on product itself
  • Cannot be bought directly from the manufacturing company
  • Long term effects are not known

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Optimum Nutrition Mega Fat Burners Review

Optimum Nutrition Mega Fat Burners is a weight loss supplement that claims to be able to help you lose weight by targeting stores of fat within the body and breaking them down so that they can be used for energy, while also suppressing appetite and reducing the amount of calories that users consume. The supplement blends various ingredients together in order to achieve the best possible weight loss results. In this review we will look at both the positive and negative aspects of the product in order to establish whether this is the best choice for you.

Optimum Nutrition Mega Fat Burners Claimed weight loss benefits

Optimum Nutrition Mega Fat Burners is claimed to be a weight loss supplement that is able to reduce stores of fat in the body by releasing more energy from food allowing users to exercise for longer and burn more fat as well as helping fat stores to be broken down. The product is also said to have the ability to suppress appetite leading to fewer calories being consumed.

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How Optimum Nutrition Mega Fat Burners Works

Optimum Nutrition Mega Fat Burners is designed to aid weight loss and its manufacturers make several large claims as to its capabilities. The product is said to be able to help users to control their appetite and help their bodies to better use the energy from the food that they eat. The key ingredients within Optimum Nutrition Mega Fat Burners are also able to help to support the breakdown of fat stores in the body lowering weight and they also have the capacity to aid the fat’s transportation and metabolism.

Calcium is a nutrient that can improve general well being and health, meaning that users may feel more likely to engage in exercise. The substance is also thought to be able to prevent cellular changes that would usually prompt the body to store fat, and may be able to cause a slight increase in thermogenesis, raising the body’s temperature and encouraging more fat to be burned for energy. Furthermore, as some calcium containing products such as whole fat milk are more filling, they may help to create a feeling of satiety and therefore prevent overeating.

Phosphorus helps to release energy from the food that we eat meaning that users generally have more energy to undertake exercise and potentially burn more fat. The substance also helps to emulsify fat where fats are broken down meaning that they are easier to burn away to provide the body with energy.

This substance is able to help to control blood sugar levels, slowing the release of sugar into the blood stream. Because of this, chromium is believed to be able to suppress appetite as users may feel that they are fuller for longer. The nutrient is also thought to be able to fight body fat and increase lean body mass, leading to a reduction in the amount of stored fat.

Garcina Cambogia
In the skin of the garcinia cambogia fruit there is a substance known as hydroxycitric acid, which is the active ingredient in the fruit that is able to bring about weight loss results. This substance works by lowering lipid levels and boost the production of an enzyme called ATP which blocks the conversion of carbohydrates into fats. The substance is also able to suppress appetite meaning that users are likely to consume fewer calories reducing the amount of fat that becomes stored in the body.

Choline is thought to help users burn fat more efficiently and has a lipotropic effect meaning that it promotes the body’s use of fat and might be able to help the liver to dispose of trapped fats. When combined with inositol it can help to fight fat and reduce stories from being produced in the body.

Inositol can help the liver to break down fats in the body and when taken in combination in choline it can form lecithin which can fight fat. It is a lipotropic agent meaning that it might be able to redistribute existing body fat during weight loss and could even help users to burn fat while they sleep. Furthermore, the substance is able to promote good mood, suggesting that users’ appetites may be curbed as the potential for emotional eating will be reduced.

L-carnitine transfers long chain fatty acids such as triglycerides into mitochondria, where they may be oxidised to provide the body with energy. It can also reduce tiredness and fatigue meaning that users can exercise for longer periods of time and therefore burn more calories. The substance is also thought to have the ability to suppress appetite meaning that calorie intake may be controlled and less fat will be stored in the body while also being able to improve strength and encourage muscle mass build up.

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Key Ingredients

As we have said, the key ingredients within Optimum Nutrition Mega Fat Burners work together to aid weight loss in various ways. They each have their own properties that make them good ingredients for fat reduction and appetite suppression leading to potentially impressive results. However these are not the only qualities that the substances carry, as some are able to treat medical conditions, ease pain and lower cholesterol. In this section of the review we will look at these ingredients in more detail and determine how else they can aid the health of users of the supplement.

There is more calcium than any other nutrient in the body and this substance has several important functions in ensuring good general well being. Calcium helps the body to build strong bones and teeth while aiding in the regulation of muscle contractions including the heartbeat and also making sure that blood clots normally. Good sources in your everyday diet include dairy products like milk, yoghurt and cheese, green leaf vegetables soya beans and nuts. According to the NHS, adults should consume around 700mg each day in order to stay healthy.

Phosphorus is a mineral that is also able to help build strong bones and teeth and support muscle contraction in the body, however it also has the ability to improve your kidney function. The nutrient can be found in many different foods and good sources of these foods include red meat, dairy products such as milk and cheese, fish, poultry, bread, brown rice and oats. The recommended guideline daily allowance for adults is around 550mg a day, but you should be able to consume enough from a healthy, balanced and varied diet.

Chromium is a trace element that is believed to influence how the hormone insulin behaves in the body. This means chromium may be able to affect the amount of energy that we get from the food we eat. Furthermore, the substance is thought to be able to lower the amount of bad cholesterol in the body and be a good method in treating health issues such as depression and polycystic ovary syndrome. Chromium can be found in foods such as meat, wholegrains such as wholemeal bread, lentils, broccoli, potatoes and spices.

This nutrient is good for helping to support brain and memory functions meaning that it may have the potential to prevent age related memory loss and possibly delay some symptoms of illnesses such as Alzheimer’s disease and dementia. Choline may also be able to reduce overall cholesterol levels in the body and possibly decrease the risk of breast cancer in women. The substance also has the ability to support proper cell function and improve general well being and is found in foods such as beef, chicken liver, soy beans, milk and peanuts.

Inositol can be used to improve blood circulation in the body in certain medical conditions and may be able to lower cholesterol and triglyceride levels in the blood. The substance has the ability to improve circulation by releasing histamine, which causes blood vessels to dilate and breaks up a protein, which is need in order for blood to clot. It is able to lower cholesterol by lowering the formation of lipids in the body. Furthermore, it can be used in the treatment of conditions including panic disorder, insomnia, depression and psoriasis.

This substance is often considered to be a helpful treatment for a large range of health conditions as it acts as an antioxidant meaning that it may be able to help fight free radicals in the body and prevent them from causing damage to cells. It is believed to have the ability to help treat conditions such as angina, heart attack, heart failure, memory impairments, kidney disease and male infertility. L-Carnitine can be found in food such as read meat, dairy products, fish, poultry, wheat, avocados and peanuts.

Garcinia Cambogia
Garcinia cambogia is a tropical fruit that is native to India and Southeast Asia and is believed to be able to aid various intestinal conditions such as an upset stomach, diarrhoea and general bowel complaints as well as being able to relieve rheumatism and urinary tract infections. As it is believed to have antibacterial qualities it has been used traditionally in medicine to help to heal surface wounds and reduce swelling thanks to its anti-inflammatory properties. It has been used for many years as a flavouring agent and food preservative.

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Clinical Studies

Clinical studies are carried out on health and weight loss supplements in order to test how safe and effective they are for human use before they are put on the market, however the market is not regulated meaning that some products reach shelves without any of these tests. There does not appear to be any evidence of any clinical studies having been carried out on Optimum Nutrition Mega Fat Burners suggesting that the product may not have been tested. In this section we will look at some of the clinical studies surrounding some of the product’s key ingredients.

In one paper, various studies on the effect of calcium on the management of weight were looked at. These studies suggest that calcium is able to produce a small, significant reduction in body weight when tested against a placebo.

In a study conducted in 2013, a group of scientists looked at the association of central obesity and phosphorus intake with changes in urinary albumin excretion; 481 participants took part in the study and their waist circumference was measured at baseline and at 6 months. The results showed that those who consumed a larger amount of phosphorus showed a larger decrease in waist circumference.

In a randomised, double blind and placebo controlled study of 80 overweight adults, weight, height, blood pressure, per cent body fat, serum and urinary biomarkers were measured over 24 weeks. The results of the study suggest that chromium may not actually have a significant effect on weight loss when taken in usual amounts.

Garcinia Cambogia
According to a paper published in 2012, there have been several studies conducted on garcinia cambogia that suggest that the ingredient is able to aid weight loss. Furthermore, the substance seems to be safe to use in healthy adults although there is still little evidence to support the claimed long term benefits of the substance as most studies have been carried out in the short term.

Twenty-two females from different weight categories took part in a double blind clinical trial in 2011. The group took choline tablets or a placebo twice daily. The results showed a significant decrease in body weight in those that took choline compared to those who did not, suggesting that the substance has the ability to aid weight loss.

In a study 26 patients were given either 200mg of inositol or a placebo each day for 12 weeks. Results showed that it was ineffective in improving the glucose metabolic markers however it was able to reduce body weight and improve fertility in women.

In one hstudy, 36 moderately overweight women were pair matched on body mass index and were randomly assigned to 2 groups. For 8 weeks the group taking l-carnitine ingested the substance twice daily while the other group took a placebo. All subjects walked for 30 minutes on 4 days each week. Body composition and resting energy expenditure were measured before and after the study. The study found that walking and taking l-carnitine did not have a significant affect on the weight of the subjects – casting some doubt over the effectiveness of the substance for weight loss.

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Weight Loss Power: 65/100

Optimum Nutrition Mega Fat Burners contains several key ingredients that have been proven to have weight loss capabilities in certain clinical tests. It seems that when these ingredients are put together in a product, the product has the potential to target different areas of weight loss in order to produce impressive results. Clinical testing is needed on the product to establish how well it actually works.
Speed of results: 45/100

There is no mention of any time frame to expect when using Optimum Nutrition Mega Fat Burners, and as there is no information regarding the amount of each ingredient within the substance available on the internet, it is difficult to determine how strong the product is and therefore how quickly it will work to aid weight loss.
Appetite Suppression: 70/100

Some of the product’s key ingredients work to suppress appetite meaning that the product appears to have the ability to reduce hunger cravings and therefore the amount of calories that users consume. However, with the lack of evidence of clinical testing it is difficult to know for certain how well it is able to stop hunger.
Long Term Results: 40/100

Again, as there is no evidence of any clinical testing on the product it is impossible to know how long term the results of the supplement will be. Although most of the ingredients within the product appear to work well to aid weight loss, there is little clinical data to prove how long term their qualities will last for.
Safety: 65/100

There is no mention of any side effects associated with the product, however this does not mean that there are not any. When looking at the key ingredients themselves, many have some potential side effects, which are not usually serious when taken in normal amounts but may still be uncomfortable. Furthermore, some of the ingredients are not suitable for everyone to consume.
Value for money: 70/100

It seems that Optimum Nutrition Mega Fat Burners is available to purchase from around £19.99 for a month’s supply, meaning that it averages to under £1 each day. It appears that the product may have the ability to work well to aid weight loss meaning that it is good value for money, however more clinical testing is needed to prove this.

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Optimum Nutrition Mega Fat Burners Side Effects

Every health and weight loss supplement has the potential to carry various side effects, some of which may be simply uncomfortable but some of which may be serious and could cause a real risk to your health. There does not seem to be much information regarding potential side effects of Optimum Nutrition Mega Fat Burners available on the internet, however this does not mean that the product is side effect free. In this section we will look at the key ingredients of the supplement and determine whether there are any potential side effects that users might experience.

While calcium is a nutrient that is essential to health, too much of the substance can be dangerous and have some uncomfortable side effects. It is important to bear in mind that large quantities of calcium can lead to an increase risk of heart attacks and can interfere with thyroid hormone replacement treatment.

Taking too much phosphorus can prove to be toxic and side effects related to the substance include diarrhoea and the hardening of the organs and soft tissue. The substance can also interfere with the way that the body uses nutrients such as iron, calcium, magnesium and zinc as well as some medications including blood pressure medicine, anti-convulsants and blood thinners.

Common side effects that might be noticed in users of chromium supplements include skin irritation, headaches, dizziness, nausea, mood changes and impaired thinking, judgement or co-ordination. The substance may also worsen some conditions including kidney disease, liver disease and depression or anxiety.

Garcinia Cambogia
While garcinia cambogia is considered generally safe to consume in normal doses, it does have the potential to cause effects such as nausea, digestive tract discomfort, headaches and mild digestive issues.

Larger doses of this substance are believed to have the ability to result in sweating, body odour, gastrointestinal distress, diarrhoea, vomiting, nausea and a decrease in appetite. There is also a larger risk of developing colon cancer in users of the supplement, however this link has not been proven.

Some of the more common side effects that are associated with inositol include nausea, tiredness, headaches and dizziness and while there are no known serious side effects, the substance may have a negative impact on conditions such as bipolar disorder as it may make sufferers more agitated.

L-carnitine side effects include nausea, vomiting, upset stomach, heartburn, diarrhoea and potentially seizures. The substance can also raise blood pressure, produce a fever, increase heart rate, cause urine, breath and sweat to have an unpleasant odour and can potentially worsen kidney issues and underactive thyroid condition. Rarer side effects may include body weakness, swelling and depression.

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How To Use

There do not appear to be any thoroughly detailed directions for use regarding Optimum Nutrition Mega Fat Burners on the internet, and as the company’s website does not currently sell the product, there is no information there either. However it does say that users of the supplement should take 2 capsules each day before meals and that you should drink plenty of water while taking the supplement. Furthermore, eating healthily and undertaking a good amount of exercise while using Mega Fat Burners will likely enhance the weight loss results of the product. There does not seem to be any mention of any of the excluded groups of people who should avoid using the product which is slightly concerning as users may not be able to ensure that the product is suitable for them before purchasing it.

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Who Makes Optimum Nutrition Mega Fat Burners

Mega Fat Burners is a product that is manufactured by a company known as Optimum Nutrition. The company is based in Cheshire in the north west of England and was founded in 1987 by two brothers who strive to significantly improve quality and innovation in the sports supplement industry. They claim to ensure that their products are of the highest quality by carrying out quality checks before they hit shop shelves. Optimum Nutrition give a customer telephone number which operates from 9am to 6pm on weekdays as well as an email address that customers can use for contact should they have any issues or queries. The company appears to be of a credible nature and has a large client base suggesting that they have a good level of customer service.

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Where To Buy

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Optimum Nutrition Mega Fat Burners is available to purchase from a number of websites including large online retailers, it should be kept in mind that prices will vary from website to website and so will delivery costs and times. However, it does not currently appear to be available to purchase directly from the official company website. The product can be bought from various shops on the UK high street as Optimum Nutrition distribute their stock to a large number of places including retail stores, gyms, fitness centres, major grocery shops and pharmacies, but again prices may vary. It seems that the best option available is to look for Mega Fat Burners in your local health and fitness shops as this way you will know that what you are purchasing is genuine.

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Overall Verdict

Optimum Nutrition Mega Fat Burners is a weight loss supplement that contains a range of ingredients that work to aid weight loss in a variety of different ways including fat burning and appetite suppression. The supplement can be bought from a wide range of retailers both online and on the UK high street and at £19.99 it is one of the less expensive weight loss products available. However more clinical testing needs to be carried out on the supplement before it can be established how long term the results of the product will be.

Overall: 60/100

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