FENFAST 375 is made in the USA with the highest quality, pharmacological-grade ingredients that have been combined into an easy-to-swallow, white & blue speck tablet. It was engineered to use only the best combination of ingredients that have been proven through clinical study to complement a healthy weight loss program. FENFAST 375 has been a part of the lives of THOUSANDS of dieters who have lost weight and the proof is with their satisfaction – our customers leave the BEST REVIEWS!

Because of the design and formulation of FENFAST 375, adults of all ages, shapes and sizes are able to use it as a part of a weight loss plan that will help them to finally be able to start to losing those stubborn pounds. FENFAST 375 achieves this with its formulation of 100% scientifically-researched ingredients that include: Beta Phenylethylamine HCl, 1,3,7 Trimethylxanthine, Hordenine HCl and L-Theanine.

The ingredients in FENFAST 375 work synergistically, amplifying each of their benefits and providing the ULTIMATE in APPETITE CONTROL & ENERGY SUPPORT for the BEST DIET SUCCESS.


APPETITE SUPPRESSANTS & CRAVING CONTROLLERS – One of the most difficult aspects of losing weight is eating less. This is where most dieters struggle and fail. However, when you take FENFAST 375, you take advantage of ingredients that have been proven to CRUSH the appetite. In fact, many customers claim they have to remind themselves to eat during the day because the appetite suppressants are so effective. When combined with a healthier, calorie-reduced diet, FENFAST 375 tablets can play an important role in your significant reduction in the number of calories you consume each day, which can result in fast and noticeable weight loss.

METABOLISM ENHANCERS & FAT BURNERS – Do you feel like no matter what you do, the weight just doesn’t come off? If you do, you are not alone. A slow-running metabolism can hinder even your best weight loss efforts, but FENFAST 375 help you to change all that. The use of industry-leading thermogenic ingredients can help your metabolism to start firing fast again, forcing your body to consume huge amounts of fat and calories during the day, particularly during workouts, but even when you are at rest.

IMMEDIATE ENERGY RELEASE FENFAST 375’s energy-promoting formula will extinguish those sluggish feelings you have during the day and replace them with ENERGY, IMPROVED CONCENTRATION & FOCUS. Not only will this help you to feel great and be more productive during the day even though you are eating less, but it will also give you the energy and motivation you need to keep up a more active lifestyle, which is essential for losing weight.

FEEL GOOD MOOD SUPPORT FENFAST 375 helps you to address the final piece of the puzzle that is so often missed with other diet products: mood support. Within the formulation is Beta Phenylethylamine HCl, which is known to promote the synthesis of the neurotransmitters norepinephrine and dopamine. By elevating the production of these neurotransmitters, FENFAST 375 provides antidepressant effects, mild pain relief, and overall improvement to mood.

The Science Behind the FENFAST® 375 Formula

The following are the clinically studied and proven ingredients that make up the exclusive formula for FENFAST 375 tablets:

Beta Phenylethylamine HCl

Beta Phenylethylamine HCl is a central component for many different well known substances that are a natural part of the body. These include the neurotransmitters epinephrine, norepinephrine, and dopamine. They are chemicals that occur naturally in the brain in order to allow it to communicate with other regions within the brain as well as other parts of the body, through the central nervous system.

This ingredient is highly valuable as a part of the FENFAST 375 formula as it has been shown in scientific study to provide two primary benefits. These can offer dieters considerable advantage when they have been struggling to lose the excess weight on their bodies through diet and exercise alone.

In this research, it was shown that when beta phenylethylamine HCl was used, there was an increase in the average energy expenditure of the body. This means that it needs to use more energy – which comes in the form of fat and calories – in order to complete its basic functions or complete additional actions.

The study also showed that when using this ingredient there was a greater trend toward the use of stored body fat as an energy source.

To dieters, this means that it can offer them faster calorie burning as well as easier fat burning as a part of their overall efforts to lose weight.

* Hoffman, J. R., Kang, J., et al. Journal of the International Society of Sports Nutrition, “Thermogenic effect of an acute ingestion of a weight loss supplement”. Volume 6, Issue 1, January 2009. http://link.springer.com/article/10.1186/1550-2783-6-1#page-1



One of the reasons that FENFAST is able to say that it contains a powerful fat burner is because it includes 1,3,7 Trimethylxanthine (caffeine anhydrous) among the ingredients in its proprietary formula. This is a well known ingredient throughout the weight loss industry, which is recognized for boosting the body’s ability to burn fat as a fuel. That type of effect can make weight loss much easier for a dieter to accomplish.

It functions by producing reactions in the body that help a dieter to overcome some of the primary challenges that they face when they are struggling to meet their weight loss goals. Clinical study* has indicated that when 1,3,7 Trimethylxanthine is used in appropriate amounts, dieters can experience larger fat mass reductions, reduce their waistlines, and decrease their overall weight than dieters who don’t use it or who use it in amounts that are too low.

Research has also indicated that when using 1,3,7 Trimethylxanthine properly – such as within a high quality formulation that uses the ingredient in the ideal amounts – it can cause a process called thermogenesis to occur (where body heat rises and more fat is burned in order to provide the fuel for the increased temperature). It can also encourage fat oxidation and leptin suppression, for further weight loss benefits.

Of course, caffeine anhydrous is also very well known for its energy boosting effects as well as helping to promote alertness.

Margriet S. Westerterp-Plantenga, Manuela P.G.M. Lejeune, Eva M. R. Kovacs. Obesity Research. “Body Weight Loss and Weight Maintenance in Relation to Habitual Caffeine Intakeand Green Tea Supplementation”.Volume13,Issue7,pages1195–1204,July 2005. http://onlinelibrary.wiley.com/doi/10.1038/oby.2005.142/full


Hordenine HCl

Hordenine HCl is one of the primary active ingredients within the FENFAST proprietary formulation. It is also known as N,N-Dimethyltyramine, Peyocactin, and Anhaline, and is well known in the weight loss industry as an alkaloid of phenylethylamine (PEA), which is also a commonly used ingredient in diet pills.

A natural ingredient, Hordenine HCl can be found in a number of different plants. Its name is derived from one of the plants that is used most commonly for its extraction, barley (which has the species name Hordeum).

Both Phenylethylamine and Hordenine HCl have been studied* for quite some time in the medical and weight loss industries. It took some time for scientists to be able to determine the right dosage in order to encourage the most effective and yet safest results, but after lengthy research over more than a decade, this discovery has now been made. Though Hordenine HCl can be used as a stand-alone ingredient, it is also seen as a highly effective part of a larger powerful formulation, as is the case with FENFAST 375. When combined with the right ingredients, its benefits can complement others very effectively in order to provide a well rounded weight loss aid that helps to boost energy levels and improve the overall mood.

Ilze Vermaak , Alvaro M. Viljoen and Josias H. Hamman. “Natural products in anti-obesity therapy.” NaturalProductReports.Issue 9, 2011, 28, 1493-1533. http://www.ncbi.nlm.nih.gov/pubmed/21738930



L-theanine is an amino acid that is a natural component of tea. On its own, its benefits in the pursuit of weight loss results are limited, but when combined with caffeine, another ingredient in the FENFAST 375 formula, it has been shown to provide considerable support that dieters can enjoy. It is in this combination that the true strengths of the ingredient come out to shine.

In one study, it was determined that when caffeine and L-theanine were combined, the results were that the outcome was different than using either of those ingredients independently. While the stimulant part of caffeine was still able to reduce “mental fatigue” and increase accuracy and memory, and reaction time, the subjects were also found to be able to experience the benefits associated with caffeine, but with a reduction in the risk of potential side effects of that substance, such as headaches, and so on.*

Unlike other diet pills that use caffeine alone, the clever addition of this ingredient means that the chances of experiencing side effects associated with that stimulant are measurably reduced.

In another study, caffeine and L-theanine were combined and were found to be the responsible agents in green tea that cause a suppression of fat accumulation and body weight increase. It was also determined that they provided other anti-obesity activities, when combined within the body. **

Together, these ingredients form a powerful fat stopping, anti-obesity, mood supporting and energy boosting combination.

* Haskell, C.F., Kennedy, D.O, et al. Biological Psychology. “The effects of l-theanine, caffeine and their combination on cognition and mood”. Volume 7, Issue 2, February 2008. Pages 113-122. http://www.sciencedirect.com/science/article/pii/S0301051107001573

** Zheng, G., Sayama, K., et al. International Journal of Experimental and Clinical Pathophysiology and Drug Research. “Anti-obesity Effects of Three Major Components of Green Tea, Catechins, Caffeine and Theanine, in Mice”. http://iv.iiarjournals.org/content/18/1/55.short