FenFast 375 Review: A Reformulated Good Fat Burner Gone Bad?

FenFast 375 is a popular fat burner and appetite suppressant that acts as a natural alternative to prescriptions like Phentermine. The product has been reformulated and may only be a shadow of its former self.

FenFast 375 Review

FenFast 375 is a well known diet pill that claims to offer a legit over the counter alternative to Phentermine and Adipex but without all of the risk of harmful side effects.

These are always the type of far-fetched claims that supplement manufacturers make about their diet pills, and most can never back them up.

We are always getting a lot of questions about FenFast and if it can really stand up to its claims.

So in this exclusive FenFast 375 review, we’re going to give you an inside view of every aspect so you can make a well researched buying decision.

Does it really work? Let’s dive right in and find out.

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FenFast 375 Review (Does It Really Work?)

Before we jump into the details about FenFast 375, it’s important to mention the difficulty that most people have trying to decide on a fat burner supplement.

Well, to be totally honest, it seems almost impossible to choose a working weight loss product on your own these days.

There are just so many to choose from and too many that downright SUCK!

And to make matters worse, most of these products make inaccurate claims and contain weak ingredients in doses that you can get from a simple sup of tea.

Deceptive marketing and impotent herbal ingredients are used to make consumers think they are buying something that they are not.

And how do they do it? Well, fake testimonials and other bogus marketing tricks are used to con you into believing that these products are the “real deal”.

The honest truth is that most of these products won’t really help you lose weight.

1. What is FenFast375?

Throughout my years of research on weight loss supplements, there are some proven alternatives out there comparable to Adipex, Phentermine and FenPhen.

They may not be as powerful as their actual prescription counterparts, but there are some good supplements that can actually help you to meet your weight loss goals.

One of the products that I used to really like in this category is FenFast 375.

FenFast is another diet pill that boast big claims from their tiny, easy to swallow blue and white speckled tablets.

According to the Official Intechra Health Website, FenFast375 is designed to:

  • Help You Lose 15-25 Pounds in One Month
  • Suppress Your Appetite Helping You Cut Calories Back Drastically
  • Blast Fat with a Powerful Thermogenic Formula Designed to Incinerate Adipose Tissue
  • Boosts Metabolism Which Forces Your Body to Burn Calories
  • Enhance Energy Levels to Enhance Physical Performance

This was the supplement that always rivaled Phentramin-D and  was one of the only other real, legit working fat burner and appetite suppressants.

2. How Does It Work?

FenFast 375 is an over the counter supplement that works to provide users with a legal and safe alternative to Prescription weight loss pills.

The main purpose of these weight loss pills are as follows:

  • Fat Burning
  • Appetite suppression
  • Energy Enhancement
  • Mood Booster
  • Metabolism Boosting

Customers purchase this product as a way to help suppress their appetite while at the same time helping to boost metabolism to help the body burn fat more efficiently.

The team at Intechra Health created this product to help fight fat from multiple angles.

The ingredients are 100% safe and natural, helping you to lose weight quickly in a way that is both healthy and effective.

3. FenFast 375 Benefits

The manufacturer claims that FenFast can offer you a number of weight loss benefits including:

Boosted Metabolism

There are people out there who can stay lean and eat whatever they want, even being well into their 40’s.

We all know someone with a naturally fast metabolism like this.

But it’s frustrating when no matter how much diet and exercise you perform, the weight just doesn’t want to come off.

This is where a powerful supplement that helps boost your metabolism can come in to play.

The ingredients in FenFast 375 are said to help to give you the boost your metabolism needs to burn up fat calories throughout the day.

Appetite Suppression And Hunger Control

One of the biggest obstacles to losing fat and getting lean is being able to control your hunger.

This is where most people fail, when on a regular recreational weight loss diet or even a precontest diet for competition.

Everyone will agree that any supplement that can help you to take control of your hunger is worth its weight in gold.

According to customer reviews, users have claimed that they had to be reminded to eat because of the hunger fighting effects of these tablets.

Increased Energy

When you are trying to lose weight, the caloric restriction that you need to burn fat can wreak havoc on your energy levels.

Just about any low calorie diet will leave you sluggish and feeling groggy.

The ingredients in this supplement are claimed to not only give you an energy boost, but also increase your concentration and focus.

This can be a big help when you are putting in long days at your job while dieting at the same time.

Having a supplement that boosts energy levels is also essential to make sure that you are ready for your training session after work.

Without a powerful energy stimulant, you can bet on heading straight home for the sofa.

Enhance Mood

This is one area that most fat burners miss and what makes this product stand out.

By including ingredients that help to promote the synthesis of neurotransmitters like norepinephrine and dopamine, you may now experience a pleasant elevation in your mood

This helps to keep you happy while maintain a positive outlook throughout the day, even on a calorie restricted diet.

4. FenFast 375 Ingredients

This is where things have gone completely downhill in recent years.

I really liked the ingredients in the original FenFast 375 supplement because they were close to those found in Phentramin-D.

It used to contain a full lineup of synthetic ingredients such as Hordenine HCL and 2-Phenylethylamine (PEA), which you won’t find in most other over the counter diet pills.

But just about all of the original ingredients were phased out and replaced with common compounds found in most ordinary diet supplements.

Another thing you’ll notice is that this is a proprietary formula, so you don’t know how much of each ingredient you are actually getting in each serving.

So with that said, here’s what you’ll find in the most recent FenFast formula:

FenFast 375 Ingredients


L-Phenylalanine is an essential amino acid that is included in popular weight loss products for its purported analgesic, antidepressant and mood elevating properties. [1]

The mechanism of action for these characteristics may be due to its role in the synthesis of neurotransmitters norepinephrine and dopamine.


Caffeine is one of the most common stimulants for the CNS (Central Nervous System), helping to reduce fatigue, boost energy levels and increase alertness.

This may relate to a more efficient flow of thoughts and an overall increase in focus during times of increased mental workload.

Caffeine can be found in just about any product that is known to product energy such as pre-workout drinks, coffee, tea and any other nutritional supplement that promotes energy levels and mental acuity.


You’ll probably find L-Theanine in a lot of other energy supplements on the market because it’s an important ingredient to include in any formulation that’s heavy on the stimulants.

Theanine has been included for its potential ability to help reduce mental and physical stress, help to improve concentration and to give you a positive boost in mood and cognitive performance.

This ingredient can have a positive synergistic effect with stimulants because it can take away any of the jittery side effects you may feel.


Also known as 3, 7-Dimethylxanthine, Theobromine is a stimulant similar to caffeine which may help to enhance the metabolism, mental focus and concentration.

The mechanism of action include its effect as a stimulant, encouraging the release of norepinephrine and possible providing a lipolytic effect.

Theobromine is found in many weight loss supplements and naturally occurs in foods such as cacao, kola nut, guarana and yerba mate. [2]

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5. Is FenFast 375 Safe?

Sometimes the question about safety and side effects isn’t easily answered because it all depends on individual factors.

It can all come down to who is using the product and whether or not they are following the instructions.

From my personal research on this diet pill though, none of the individual ingredients pose any potentially serious side effects when used in moderation.

Again, this product is relatively safe when dosed according to the label and used as directed.

Anytime a product is abused instead of used, there could be some serious risk involved, so just make sure to follow the instructions on the bottle.

But with all over the counter supplements, it’s a good idea to consult with your physician to rule out anything that you may not be aware of.

6. How Much Does It Cost?

The cost of this product is marginally cheaper than other competing products and that’s because of the simplistic formula; there’s nothing special about it.

If you want to score the best price then you need to take a look at the package deals and break them down to the lowest price per bottle.

Let’s take a look at how you can get the best deal on FenFast:

  • Single Bottle (1 month supply) = $49 per bottle
  • 2 Bottle Package (2 month supply) = $44.50 per bottle
  • 3 bottle Package (3 month supply) = $43 per bottle
  • 6 Bottle Package (6 month supply) = $39 per bottle

The 6 bottle package obviously yields the best deal and this is the lowest price per bottle that we have seen in this category of diet pills.

Your best bet is to split the cost with a friend and take advantage of paying just under $39 per bottle.

7. Is There a Money Back Guarantee?

Yes, the manufacturer offers a 30-day money back guarantee on FenFast 375. This means if you are not satisfied for any reason, simply return the bottle for a complete refund, minus shipping charges.

8. FenFast 375 Customer Reviews

When it comes to the customer reviews, I’ll leave that up to you to make the decision.

Taking a look at the official website, things look a little bit suspicious to me as far as the lopsided 5-star reviews by “verified purchases.”

This is just my opinion and like I said, you can take a look for yourself and make a decision as to whether or not you feel all of these customer reviews are legit.


Is it sold in stores like WalMart, Walgreens, Rite Aid, CVS and GNC?

No, you won’t find FenFast in the actual stores, but you can buy them online through these websites.

Can you buy it on Amazon or Ebay?

Yes, FenFast 375 is currently sold on Amazon and you can find discounted bottles on Ebay.

Are there any coupon codes?

No coupon codes are currently available to my knowledge.

Do they offer a free trial?

No, the manufacturer doesn’t offer a free trial.

Is this product available in both tablets and capsules?

No, this product is only available in tablet form.

Is it legal?

Yes, it contains simple herbal ingredients found in most over the counter diet pills and is therefore 100% legal.

Do they offer free shipping?

Yes, free shipping is offered when you purchase 2 bottles or more.

Is there a money back guarantee?

Yes, a 30 day money back guarantee is available.

Bottom Line: Should You Buy FenFast 375?

Like stated earlier, I used to really like this diet pill.

The formula contained synthetic ingredients and rivaled all of the other top legal replacements for Phentermine and Adipex.

But things have taken a turn over the years with formula changes and FenFast has transformed into just an “average” diet pill.

The price point also reflects this change; it used to cost $67 per bottle and now it’s down to $49.

If you choose to go for it, the ingredients are relatively safe and the price is relatively cheap compared to the competition.

There’s also a 30 day money back guarantee, so if you are not satisfied you won’t be at a total loss.

On the other hand, if you are looking for a top of the line replacement for Phentermine and Adipex, I highly recommend taking a look at Phentramin-D.

Phentramin-D is one of the only supplements that contains a full-synthetic formula and is the closest thing to a true pharmaceutical diet pill you’ll find over the counter.

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