Updated: 09/29/2015 - Sponsored by Leptigen

BPI B4 Review - Does This Thermogenic Fat Burner Really Work? Are lack of clinical studies and side effects deal breakers?

Editor's Review: 3.5 / 5.0

bpi-b4-product-imageThere has been a great deal of buzz concerning BPI B4, so we took the time to create an in-depth review, examining the ingredients, side effects, customer service and clinical studies. We additionally focused on dozens of dieter comments and customer reviews from all over the web. Finally, we condensed all of the information we discovered in order to give you the bottom line.

EDITOR'S TIP: Substitute BPI B4 with a proven fat burner such as Leptigen for better results.

What You Need To Know

BPI B4 is one of several workout supplements available from BPI Sports. It’s available on the official website for $29.95 (30 capsules). This product is taken once a day, and is supposed to burn off fat. It’s described as a CNS stimulant, dopamine modulator and adipose tissue regulator. As for what is in BPI B4, this product contains; Caffeine Anhydrous, Dendrobium Noble, Canavalia Glandiata Seed, Psoralea Corylifoia, Sophora Japonica Leaf, Red Wine Concentrate and Pausinystalia Yohimbe Bark. BPI B4 is described as a high-performance thermogenic and weight loss formula.

This diet aid was first released in 2013, and it is touted as super-powerful and “ultimate” extra strength. Furthermore, a couple before and after photos are posted on the company website, and BPI Sports has been around for several years now, but read on…

No Real Clinical Evidence

According to our research editor, “There is no clinical data presented on the official website to support the weight loss claims regarding BPI B4 capsules. It’s evident after looking at customer reviews that this diet aid doesn’t work well for everyone.”

One user said, “There was really no major effect from using this product, other than having to go to the bathroom a little more than normal. Other than that, I saw no noticeable weight loss.”

According to another dieter, “In all honesty, this stuff is terrible. I took it for a whole month while working out and it did absolutely nothing for me.”

Scroll below for one of the best products we’ve seen in 2015.

Serious Side Effects – Watch Out!

There are dozens of customer complains regarding side effects from BPI B4. In fact, one user stated, “I don’t think any vitamin or supplement has ever left me feeling so sick. Within the hour, I am lightheaded and nauseated. My head hurts.”

“Nausea, vomiting and jitters. Extreme high pulse. Don’t recommend it. Just horrible feeling, not worth it,” said another customer. “Every time I took it I would feel sick to my stomach!,” said yet another user.

According to our research, if a certain aspect of a weight loss supplement or diet program is quite problematic (dangerous side effects, high price, no clinical research) the probability of long-term weight loss success is slim. In other words, if BPI B4 does cause serious side effects in a lot of people, this could be a major issue.

The Science

We were unable to find any documented scientific evidence supporting the weight loss claims made about BPI B4 capsules. The official website does not provide any science at all. Since we at DietSpotlight need to see published clinical studies supporting the diet product and how it assists with weight reduction, we can’t get behind BPI B4.

The Bottom Line

It’s clear that BPI B4 is marketed as an extremely powerful thermogenic, but the customer reviews we found online say otherwise. Therefore we do not recommend this diet formula. It’s also important to factor in the numerous user complaints about side effects like headache, stomach pains and nausea. Furthermore, there does not appear to be a satisfaction guarantee provided for BPI B4.

Those who wish to drop more pounds and slim down, we recommend a weight loss product that contains safe ingredients, is backed by clinical studies and does not cause harsh side effects.

One of the top diet products we’ve come across in 2015 is Leptigen. This weight loss formula uses a unique blend of four ingredients, which have been shown in documented scientific studies to help increase metabolism and improve overall fat loss. We haven’t found any talk of negative side effects and dieter reviews posted online reveal people are seeing good results.

Also, the makers of Leptigen are so confident in their product they’re offering a special trial offer, which is a good sign.

Learn More About Leptigen »

(Feel free to scroll below for our previously published full-length BPI B4 Review)

Previous BPI B4 Review (Updated August 22, 2014):

What You Should Know

Click Here To See Our Highest Rated Review

Some dietary supplements are intended to assist you in more ways than one. Therefore you should take the time to consider the type of assistance you need, whether it be with fat loss, muscle building, endurance levels, or weight management, before you choose any specific product. In this piece, we will help you become better acquainted with BPI B4, which is one of several supplements offered by BPI Sports. According to BPI, this supplement is available in super capsules, which probably means the capsules are large. As for the cost, BPI B4 sells for anywhere from $27 to $50 through online stores.


  • Caffeine (As Caffeine Anhydrous)
  • Dendrobium Nobile (Stem) (As DendroMAX™ Extract, Concentrated For Total Alkaloids Content)
  • Canavalia Glandiata (Seed)
  • Psoralea Corylifoia
  • Sophora Japonica (Leaf) (Quercetin)
  • Red Wine Concentrate
  • Pausinystalia Yohimbe (Bark)
  • Microcrystalline Cellulose
  • Gelatin
  • Magnesium Stearate
  • Stearic Acid
  • Silicon Dioxide
  • Candurin Silver Fine
  • FD&C Blue No. 1

Product Features

BPI B4 is essentially marketed as a supplement for fat loss and enhanced workouts. In other words, this product may help improve your performance, while reducing your weight. One capsule is a serving, and it should be taken 20-30 minutes prior to working out. If you are not working out, take BPI B4 in the morning or midday. According to the website, this product is high-end and dual-performance. Unlike many weight loss pills, this supplement is mostly geared toward guys.

Some of the notable ingredients used in BPI B4 are Caffeine (a stimulant and diuretic that ignites energy levels), Yohimbe Bark (aids with fat loss), Red Wine Concentrate (contains antioxidants and may support heart health), Sophora Japonica, Psoralea Corylifoia, and Dendrobium Nobile. This product is not suitable for those under the age of 18, and it is not okay for women who are pregnant.

See Our Featured Diet


  • Some interesting ingredients are used in this weight loss formula.
  • BPI B4 only needs to be taken once each day, one capsule.


  • This diet product is mostly just for men.
  • The active ingredients in this supplement are not explained well.
  • You might experience some side effects when taking BPI B4.
  • There is no mention of a 100 percent satisfaction guarantee with this diet product.
  • This supplement may cause sleeplessness when taken late in the day.


It is unclear what makes BPI B4 so “effective.” While this supplement does contain caffeine to boost energy levels and stimulate the metabolism, most of the other ingredients are not elaborated on. This factor alone is enough to deter some dieters. On a separate note, it is obvious that BPI B4 is intended for men who exercise regularly. This is why this supplement is for improved endurance and performance levels.

GD Star Rating

8 User Reviews About BPI B4

Leave comments below
  • 1

    I was given a sample at GNC. I am 62 y/o . I took it in the morning. Within 2 hours I became extremely tachycardic and light headed & sweaty. I felt nauseated. This is a supplement which should not be taken w/o proper warning . I almost went to the hospital thinking something was terribly wrong. I was glad I did not go to work out!


  • 2

    Hi, i was reading that this product is mainly for man, can a women take it? does it help to lose appetit in order to lose weight. any side effect?


  • 3

    I was given B4 sample by a GNC store manager. I am a nurse and work 12 hour shifts, so I am frequently exhausted. I took this and was so sick. I usually drink 3-5 cups of coffee per day, so I ruled out caffeine sensitivity. I was so nauseous, my heart rate was in the 120’s, I was flushed and sweating through my scrubs. My pupils were dilated and I was shaking. I actually had to leave work. I was sick all day long. I noticed when I read other reviews, most positive comments were from specifically men that have used workout stimulants before. I did read up on the ingredients, and the dendrobium works like, and has a similar chemical composition of amphetamines. Just a word of advice from a naive, had to learn the hard way this time girl; not everything from a health food store is safe. Know what the ingredients are and what their mechanism of action is before taking an supplement.


  • 4

    I have started to use this product 5 days ago and I am losing about a pound of weight each time I go to the gym. I don’t think that people will have the same results as me I am an advanced lifter and have a lot of muscle and I think it’s helping with the weight loss but I had belly fat I could not get rid of and I’m becoming very lean. I am very happy with the results. I will post back when I have reached the 2 week mark or until all b4 has been taken


  • 5

    I have recently went to my GNC store and talked with a associate there who recommended this for me to loose my belly fat that I can’t get rid of while working out. I’ve read that this is mainly used for men so I’m kind of wondering now if this is the right product for me. Can someone help



    Hello Jennifer,

    I’ve been taking the product for 5 days now and have notice a trimming of my belly fat. My love handles are disappearing and the stomach is smaller than before. But, I also take the nite fat burner and put on my elastic stomach support (the one I use when I work out) and I am looking better in my clothes….my stomach is not as obvious. Last thing, I stopped working out to see how good it actually works. I will give you an update next week. Good luck!



    just started on Saturday. will let people know in a few weeks.



    I’m 24 and getting married in a few months and want to lose the few extra stubborn pounds I haven’t been able to shed. My local GNC recommended this for me. However after reading side effects I’m apprehensive. I would love to hear everyone’s feedback on this product before I start taking it. Thank you.


Have a comment or question about BPI B4?