Phen375 Product Image

Phen375 Review

If you’ve stumbled across Phen375, it’s more than likely because you’ve seen multiple health and fitness review websites claiming it’s the best thing since sliced bread. The product comes with some big claims and a sizable price-tag to boot, but is this diet pill actually able deliver weight loss results for consumers? In this Phen375 review, we’re taking a look at what the science says and explaining what we believe consumers can and cannot expect.

Readers please note that statements on this page are fair comment based on observation. This content is produced on a matter of public interest. Statements on this page are our honest opinion, not fact. Let’s take a look at the top level pros and cons of this product:

Phen375 Benefits:

  • May help elevate user metabolic rates
  • Will boost user energy levels
  • Can help improve athletic performance

Phen375 Drawbacks:

  • Doesn’t contain any ingredients that directly and independently “burn fat”
  • May not be consistent at suppressing user appetite levels
  • Both EU and US versions of Phen375 contain Citrus Aurantium – an ingredient deemed “possibly unsafe” by WebMD

Phen375 Product Image

Some Quick Information About Phen375

Phen375 is a self-proclaimed thermogenic weight loss pill produced by a US-based company named RDK Global. Currently, the company have a rating of B- and one customer complaint filed against them on the Better Business Bureau.

One bottle of Phen375 costs $65.95, contains 30 tablets and will last users for approximately one month, based on the directions of one per day.

The styling of Phen375, both design and product name, is similar to the popular weight loss drug Phentermine 37.5mg (often shorted to “Phen”); despite Phen375 looking and sounding suspiciously like a prescription weight loss drug, it is a food supplement.

Unsurprisingly, this product is targeted towards those who are looking to lose weight. What makes Phen375 a unique proposition to consumers is that the product is marketed as an all-in-one weight loss pill – RDK Global claim that the product is both a bonafide fat burning pill and an appetite suppressant pill.

Consumers are promised effects such as the improved ability to metabolize body fat, suppressed hunger levels, an increased body temperature and hastened metabolic rates.

Does Phen375 Work?

Based on our research into this product, we believe that it may be a helpful produce to use for the purposes of weight loss, however we do not believe it will function exactly as described by RDK Global on the official Phen375 website – overall, we feel there is a lot of inaccurate information.

Firstly, it’s important for us to stress that Phen375 is not a miracle weight loss pill, nor is it as effective as the drug Phentermine. The formula does not contain any ingredients that will directly and independently “burn body fat”, nor does it contain any fully-dedicated “appetite suppressing” ingredients.

With that out the way, let’s move onto the benefits of this product.

When looking at the supporting scientific evidence for the Phen375, we found studies that showed the product is likely to improve user metabolic rates and increase user energy levels – if you’re a regular gym-goer, you’ll probably find these effects very useful.

While we stated there are no ingredients that’ll directly “suppress the users appetite”, the formula does contain stimulants like caffeine that can potentially cause a temporary appetite reduce for certain people, though it is by no means consistent for all users and the effects can diminish with sustained usage as your body builds a tolerance to the substance.

In order to see genuine weight loss results from using the Phen375 diet pills, you’re going to have to completely overhaul your diet and lifestyle; no weight loss pill on the planet can compete against a bad diet – if you’re someone who is consuming more calories than their body requires on a daily basis, you will continue to gain weight.

With some smart, low calorie food choices, some willpower and dedication, there’s no reason you can’t use Phen375 as a helping hand to achieve your weight loss goals.

The bottom line – Phen375 is a decent weight management product to use in conjunction with a calorie-restricted diet and exercise regime, but it’s not going to deliver miracle-like results without you putting in the effort.

What Are The Phen375 Ingredients?

Depending on your location, the ingredients inside Phen375 can different. Currently there is an EU formula and a US formula.

We have found the following supplement facts via the official Phen375 website:

US Formula Phen375 Ingredients:

One Serving Contains: Calcium Carbonate, ChromiumL-CarnitineCaffeine AnhydrousCayenne Pepper Extract, Dendrobium Nobile Extract, Citrus Aurantium Extract* and Coleus Forskolii Root.

EU Formula Phen375 Ingredients:

One Serving Contains: Calcium Carbonate, Chromium, L-Carnitine, Caffeine Anhydrous, Cayenne Pepper Extract and Citrus Aurantium Extract*.

This product appears to be suitable for vegetarians and vegans.

DietProbe Warning: *Citrus Aurantium is deemed “possibly unsafe” by WebMD. Do not use this product if you suffer from high blood pressure or heart problems. Ingredients inside this product may worsen symptoms of anxiety and bipolar disorders. Discontinue usage two weeks prior to surgery. Do not use this product if you’re under the age of 18.

What Are The Phen375 Side Effects?

We’ve compiled the following potential side effects based on the ingredients inside this formula:

  • Nervousness
  • Restlessness
  • Nausea
  • Vomiting
  • Increased heart rate
  • Stomach discomfort
  • Acid reflux
  • Flushing
  • Insomnia [1][2][3]

Note: these side effects are possible but may not be the typical user experience.

What Claims Are Being Made About Phen375?

We have found the following claims and/or implications being made about this supplement:

    1. May reduce food cravings with regular usage
    2. May help improve user metabolism speeds
    3. Can increase the rate in which the body burns fat

When looking at the clinical evidence, we found some studies that supported these statements, however we also found studies that did not. One thing you’ll probably notice about the above claims is the word “may” – all suggested effects written on the Phen375 website are not guaranteed for 100% of users.

In regards to claim #1, we believe that Phen375 is pretty unlikely to cause significant appetite suppression for the majority of users. The formula does not contain any satiety-promoting (i.e. hunger reducing) ingredients, rather the only thing that may potentially help reduce your appetite is the caffeine; caffeine has been shown to help lower certain peoples’ appetite levels for short periods of time after ingesting, though it’s important to note that the effects are unlikely to be consistent.

When looking at claim #2, we believe that Phen375 is highly likely to help improve your metabolic rates, again this is down to the formula being loaded with stimulants. Ingredients like Caffeine, Cayenne Pepper and Citrus Aurantium all have mildly thermogenic properties, which can help spike user metabolism speeds for a 2-3 hour period (the length of time can start to diminish as your tolerance to the substances increases).

Finally, we believe that claim #3 is a bit misleading, but ultimately may be true. As we mentioned earlier in this review, Phen375 is a useful product for those looking for a helping hand hitting their weight loss goals. Though it won’t directly “burn body fat”, it can help you lose weight naturally by supporting a change in diet and lifestyle.

Are There Any Reviews From Customers?

We have found the following Phen375 review testimonials via customers online:

This product worked pretty well for me. Saw a decent energy boost and did end up losing weight.

Phen375 helped control my appetite but I didn’t really drop much body fat.. I only used for 1 month though.

Where Can I Buy This Product?

This product is only available via the official Phen375 website ( – this product is not available anywhere else.

Our Conclusion.

To conclude our Phen375 review, it’s a bit of a mixed bag – there are things that we like about it and things that we aren’t too blown away by.

It’s not the worst fat burner in the world, but we think RDK Global do slightly over-exaggerate the abilities of Phen375.

If you’re willing to put yourself on a low calorie diet and ensure that you do not consume more calories than your body needs, then we don’t see why you wouldn’t have success using Phen375 to help you along with your weight loss journey.

Another benefit is that if you’re a gym-goer, Phen375 will most certainly help improve your athletic performance (due to the stimulant content). We believe this product will also help improve cognitive performance and reduce user RPE (rate of perceived exertion).

Kath Ross, PhD
Health Editor at DietProbe
Kathryn is a Ph.D Health Editor here at DietProbe. She specializes in diabetes and weight control research and in her spare time she's a professional cat lady and wine connoisseur!