BPI Sports B4 Review – Dual action pre-workout and weight loss pill

bpi sports B4 pillsWho Makes It? – bpi Sports
What Is It? – Dual action pre-workout and weight loss pill
Basic Function? – Energizes for workout and burns fat at same time
Recommended? – Its a reputable brand, but reports of side effects are a worry, there are others preferred in this caegory.
Alternatives? – Instant Knockout is in a class of its own.

Read our review of Instant Knockout here

fat burners that are not recommended

bpi Sports B4 Review

B4 is a fat burning supplement produced by BPI Sports and marketed as a pre-training aid. The fat burning process releases a lot of calories that can then become a useable source of energy, so there could be some truth in the manufacturer’s claims that use of the product may “help enhance performance, training, and help support weight loss.”

In theory, the same could be said for any fat burning product worth its salt. B4 does contain a few interesting ingredients though. We have seen on various forums comments by past customers that have expressed symptoms of side effects

B4 Pros & Cons at a Glance

The Pros

  • Some of the ingredients may assist fat burning
  • Use of the capsules may provide extra energy to use while training
The Cons

  • Use of a proprietary blend
  • Many users report unpleasant side effects

The B4 Blend

Each capsule provides 30mg of Niacin and 680mg of a proprietary blend.

Niacin (Vitamin B3) is reputed to help maintain a healthy heart. It is also often credited with fat burning abilities and the amount included here seems about right. What benefits the proprietary blend may or may not offer is harder to say due to the lack of inclusion rates.


  • Caffeine Anhydrous: Caffeine powder. Caffeine benefits can include increased energy and improved levels of alertness. Some degree of appetite suppression may also be possible, but side effects may include, headaches, jitters, and nausea.
  • DendroMAX Extract:  BPI use DendroMax in several of their products. It’s a patented from of the dendrobium nobile (sourced from a species of orchid). Dendrobium nobile is often used in traditional Chinese medicine, but although BPI seems to rate its fat burning abilities highly it is not a scientifically proven thermogen. It is also a worrying inclusion because there is some concern use of the ingredient may increase the likelihood of seizures.
  • Canavalia gladiata (seed):  Usually called sword bean, some people believe canavalia gladiata may boost adenosine triphosphate (ATP) and provide extra energy.
  • Psoralea corylifolia (seed):  A plant-based ingredient used extensively in Indian Ayurveda and Tamil Siddha medicine. It is credited with many health-boosting abilities and is believed to encourage weight loss, but its fat-fighting abilities are far from proven.
  • Sophora japonica (leaf) (Quercetin):  Leaves taken from the Japanese pagoda tree. Sophora japonica is believed to offer many benefits and be particularly good for ensuring a healthy heart. BPI appears to have included it here to provide the flavonoid quercetin, which has shown some promise as a weight loss inducer.
  • Red wine concentrate: Red wine is rich in antioxidants and is also a source of resveratrol (known to promote healthy heart function), but its fat burning abilities remain questionable.
  • Pausinystalia yohimbe (bark):  A stimulant that is sometimes used to improve the libido. There is also some speculation that it may assist fat burning, but supporting evidence is lacking.

Usage Instructions

On training days one capsule should be taken 20 to 30 minutes before training is commenced. One capsule should also be taken on non-training days.

Customer Feedback

Customer feedback is plentiful, but there has been a mixed response to the product.

Two average positive testimonials read:

“The BPI Sports B4 works. If I exercised more I would lose more but it certainly does give me energy and help with weight loss. The best part is that I am experiencing no negative effects from the pills. I will purchase more of these to continue with the pills.”

“Love this! Feel the energy without the jittery shake feeling that you can get from other pills. The price is amazing! All around its an absolutely perfect product! Oh and I’ve lost about 7 lbs in 4 weeks! BOOM!!”

Many of the negative comments about the product have been left by customers who experienced nasty side effects:

“I took these four days in a row and at first I wasnt sure if these pills were giving me the stomach cramps or not so I kept taking them but by the fourth day it was obvious that this was the culprit of my stomach aches. I immediately stopped taking and feel much better!”

“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.”

One customer reports a particularly bad experience.

“I had a really bad allergic reaction on day 7th. I got all red, shaking, 20 min after I took the pill. I felt like my heart was going to explode, and I had difficult to breath. I went to ER and they gave me a anti Histaminic and a corticosteroid right way. The doctor said that I’m allergic to some substance in there. but he couldn’t say which one.”

Side Effects & Health Issues

Many customers claim to have experienced nasty side effects so all potential B4 users should discuss the matter with their doctor prior to commencing supplementation.

Reported side effects include:

  • Hives
  • Jitters
  • Feelings of sickness
  • Flushes
  • Racing hear
  • Stomach cramps

Is It Recommended?

Instant knockout MMAWe’d have to advise caution with bpi’s B4. It’s got quite a few ingredients that haven’t been extensively reviewed in the past. That’s not to say that new ingredients or rarely used ingredients are automatically bad, but the feedback for users give us pause.

To provide a solution, there is definitely a product we can recommend to you and we’re 100% confident in this one – Instant Knockout. Just follow the link below.

Click here to read the review of Instant Knockout

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