In the world of nonprescription diet pills, FENFAST® 375 has risen above the competition to provide weight loss enhancement that is entirely unique to this proprietary formulation. It brings together the highest quality ingredients in order to create a pharmacological grade diet tablet. It has been meticulously designed to promote an accelerated metabolism in order to bring about faster fat burning results.

FenFast 375 tablets are each:

  • Manufactured in the United States under rigorous quality standards, using scientifically researched ingredients.
  • Designed to provide an enhancement to the mood and the energy levels.
  • Created to offer considerable appetite suppression so that dieters on a reduced calorie diet will not be held back by hunger pangs.
  • Scientifically developed through the proprietary formula for faster fat burning.

The result is that FENFAST is one of the best nonprescription weight loss alternatives to the top prescription diet drugs.

These results, as well as the other range of benefits that FENFAST 375 was created to provide, are the outcome of this scientifically engineered formula.  It begins with the ingredients of the highest quality and potency, including Beta-Phenylethylamine HCl, Caffeine Anhydrous, Hordenine HCl and L-Theanine.  Each of those substances has been individually clinically studied in order to ensure safety and effectiveness.  The scientists at Intechra Health Inc. then brought them together to create a single highly powerful weight loss aid.

The benefits of all of these ingredients, combined within the FENFAST 375 diet pills creates a stimulation effect on the metabolic rate.  The outcome of this faster metabolism is an increased ability to burn fat and calories by the body.  When that effect is combined with a regular exercise program and a reduced calorie diet plan – as would be recommended by a doctor when prescription diet drugs are prescribed – the best results of using this nonprescription pill can be reached.

This is because FENFAST was designed specifically to replicate the type of benefits that are available through prescription diet drugs such as Phentermine and Adipex.  In fact, these tablets even look comparable to those drugs.  This was done on purpose to show just how closely the Intechra Health paid attention to the need for dieters to be able to receive appetite suppression, energy enhancement, increased fat burning, and positive mood support.

These American-made weight loss tablets have been manufactured under the highest quality standards so that dieters can be assured that they receive products that are both safe and fresh.  This, in combination with the winning proprietary FENFAST formula, place these pills among the best weight loss supplements currently available.

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Rick Stevens

ok this diet pill does not work as well as Phentermine as it claims, but for a non prescription knock off of Adipex and Phentermine it actually did pretty well. As satisfied with the hunger control of Fenfast and still lost a lot of weight with it. Comparable to Phentermine actually.

Very high quality and Effective Diet Pill
Jean Page

I am a middle aged woman who is carrying some extra pounds. After my doctor told me that I did not need liposuction but what I needed was to lose weight, I ordered Fenfast. I have had great results (I lost 17 lbs) with little side effects.

Hi there just wanted to say a bit about my experience with Fenfast. It really works! I thought for sure it would be a scam and there would be no way that I was losing 10 lbs in a week. But after one week I was down 11 lbs. Unbelievable really! I tried to eat better but it wasn't hard because I was not hungry. I am continuing with this pill until I get down to 135 (I am currently 186). Good Luck!

I have failed at every diet that I’ve ever tried in my life but this time I’m actually going to reach my goal. 5 pounds lost in my first week. I didn't think it was possible.
Angel Carson

I started Fenfast 6 days ago and I have already lost 9 pounds! I had no idea I could lose this much so fast. My friends say it's all water weight but I don't care I am so happy to see such a big result so fast. I had doubts when I ordered it but now I am a believer! I am very eager to see what happens over the next month or so.
Sarah Bletz

While I believe this really works to control your appetite, I would only start taking them if you are planning to follow a good weight loss program at the same time. If you are just going to take the pills, you run the risk of potentially starving your body. You need to make sure that you are still getting the proper nutrition your body needs. I know someone who took these pills and ate nothing but rice cakes for two weeks! Yes she lost a pile of weight, but seriously your body needs more then rice cakes! As soon as she stopped taking the pills she started eating regular foods again she gained all the weight back plus more. Be careful with how you take them or you could end up heavier then when you started.

I have been overweight most of my adult years. This med helped me lose 45 lbs in the first 3 months. I need t lose another 50 but being halfway there I can see the light at the end of the tunnel! If I can do it anyone can.

Fenfast works. Period. I am steadily losing half a pound a day.
louisa mcnight

Seems to be a good diet pill, gives you lots of energy and suppresses hunger but won't make you feel like you have done speed. I am only on day two and already down 2 lbs. Good start. Will be very interesting to see where I am at after a week.
C. Boudier

Won't make you feel awful like Phentermine! I am taking fenfast now instead and no jitters, headaches or anxiety. I highly recommend to anyone with sensitivities to Phentermine.

works well to control the appetite and cravings while on it, but once you come off your hunger will return. unfortunately there are no shortcuts to good eating and regular exercise but if you want to lose a few lbs fast, then this is worth a try.

the first week i lost 7 lbs but i have been on them now for 3 weeks and havent lost anything else
Holly Moore

I'm on my second full day with fenfast and haven't noticed a difference in my appetite... anyone else experience this?

I think that these reviews are a bunch of bs. I took Fenfast for 5 weeks with no appetite suppressed or energy boost. I actually gained a few pounds. Don't waste your money.

starting my second week and just weighed myself... 4.7 lbs down. no hunger at all. pretty good energy but can't sleep if i take it too late inthe day. couple of headaches the ffirst few days, but nothing major. it's working for me :)

I have been taking Fenfast for about three and a half weeks and have lost 9 pounds. Slow but steady and I feel great. No jitters or side effects. Best product I have ever used. I don't lose a ton of weight quickly because I am smaller and only need to lose another 9 or ten pounds. It is the only pill that has EVER worked for me.

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FENFAST® 375 Fat Burning Formula

Beta-Phenylethylamine HCl

FENFAST 375 is made up of a proprietary formulation that includes Beta-Phenylethylamine HCl, as well as a number of other well known and carefully studied ingredients.  These each complement one another to result in a tablet that makes weight loss much faster and easier to accomplish.

Equally, the developers of this formula also wanted to make sure that the substances that they chose would not be exclusively associated with dieting benefits on any level.  Instead, they wished to ensure that they found ingredients – like Beta-Phenylethylamine HCl – that had been clinically studied and that were known for their effects and for being safe to use.

Beta-Phenylethylamine HCl has therefore undergone scientific research* and the scientists used this information to be certain that it was appropriate for use in this formula. FENFAST® 375 includes this ingredient because of the extensive study that has been conducted in order to understand it, and that has been directed toward its use as a weight loss aid.

As an essential amino acid, Beta-Phenylethylamine HCl is a substance that the body naturally needs but cannot produce on its own. Studies have shown that when its use was compared to that of a placebo, it showed greater results in terms of overall weight reduction.  Moreover, it was shown to suppress the appetites of the dieters so that they found it easier to consume less food every day.  This helped them to naturally reduce their caloric consumption.

Another wonderful benefit of Beta-Phenylethylamine HCl is its ability to improve mood. Many studies have examined this ingredients ability to combat depression and have found supplementation to be very effective. This property also makes Beta-Phenylethylamine HCl a perfect addition to FENFAST 375 because it helps to make dieters feel better overall, which has a positive impact on motivation levels.

*  AL Russell, MF McCarty. “DL-phenylalanine markedly potentiates opiate analgesia – an example of nutrient/pharmaceutical up-regulation of the endogenous analgesia system”. Med Hypotheses. 2000 Oct; 55(4): 283-8.

Caffeine Anhydrous

The FENFAST formula is based on a meticulous design of ingredients that were chosen and combined based on scientific research. Among the substances that make it the powerful fat burning and metabolism boosting diet pill that it is known to be, is caffeine anhydrous.  Also known under the chemical name 1,3,7 Trimethylxanthine, this synthetic stimulant can help to make it easier for dieters to reach their weight loss goals.  The reason is that this ingredient can help to safely eliminate many of the challenges that are associating with shedding excess fat.

Careful scientific study* has shown that when caffeine anhydrous is used in proper doses by people who are dieting, the result can be greater weight loss overall, a larger reduction in fat mass, and a smaller waist circumference than dieters who did not use this ingredient, or who used less of it.

Other research on caffeine anhydrous has also indicated that when used properly, as is the case with the FENFAST® formulation, a process called thermogenesis results, and fat oxidation and leptin are suppressed.  These processes allow the metabolic rate to rise so that the body can burn a larger amount of fats and calories than would be possible with diet and exercise alone.

*  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 Intake and Green Tea Supplementation”. Volume 13, Issue 7, pages 1195–1204, July 2005.

Hordenine HCl 

There are three primary active ingredients within the FENFAST 375 formulation, and one of them is Hordenine HCl.  This is a natural ingredient that is derived from one of many different plant sources that can provide it.  The most common of them is barley, which has the species “Hordenum”, from which the ingredient received its name. That said, this substance is also known under several other names, which include N,N-Dimethyltyramine, Peyocatin, and Anhaline.

Regardless of the name that is used for Hordenine HCl, the weight loss industry knows it as an alkaloid of phenylethylamine (PEA), which is another common diet pill ingredient.  Both of these substances have undergone considerable clinical study* over a number of years.  Both the weight loss industry and the health and wellness industry as a whole have taken great interest in the various benefits that it can provide when properly dosed.

Though Hordenine HCL can be effectively used on its own to promote weight loss, when combined with the rest of the FENFAST proprietary formula’s ingredients, it rounds out the many weight loss promoting benefits.  It provides both an energy level boost, as well as an improvement to the overall mood.  This makes it easier for a dieter to exercise, and can assist in supporting a strong motivation level throughout the diet.

*  Ilze Vermaak ,  Alvaro M. Viljoen and Josias H. Hamman. “Natural products in anti-obesity therapy.” Natural Product Reports. Issue 9, 2011, 28, 1493-1533. ‘


This amino acid can be found within the composition of tea. It has been included in the FENFAST 375 formula for its effects when combined with caffeine.

A study* conducted by Biological Psychology concluded that the powerful duo can work together to provide all of the benefits of elevated caffeine levels, but without the drawbacks that can commonly occur, such as jitters and headache.

Additionally, the International Journal of Experimental Clinical Pathophysiology and Drug Research found that this combination is also helpful in suppressing the body’s ability to accumulate fat.**

* 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.

** 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”.