Prime Labs Xtreme Slim

Prime Labs Xtreme Slim is described as an advanced fat burner designed to give your body an extra weight loss boost, so that you can “feel the energy soar through you”. We take a look at Prime Labs Xtreme Slim to find out more.

Prime Labs is a US-based dietary supplements company, selling predominantly via Amazon and the official website. According to their contact details, the company offers online support meaning you can email or communicate via Facebook messenger. No other address details are provided.

Prime Labs Xtreme Slim Pros

  • May cause an increased energy buzz
  • Vegetarian capsules

Prime Labs Xtreme Slim Cons

  • Some evidence of fake feedback comments on Amazon
  • May cause caffeine related side effects
  • Some of the ingredient quantities seem inadequate
  • No real contact details
Watchdog Rejected

Prime Labs Xtreme Slim

Review Links

WATCHDOG TIP: Consider using the consumer #1 rated weight loss product – CLICK HERE

Prime Labs Xtreme Slim Overview

What You Need To Know About Prime Labs Xtreme Slim

Prime Labs Xtreme Slim promises to bring you advanced weight loss with some well-known ingredients but although the green tea/caffeine combination may be effective, the most likely effect of this supplement is as a stimulant based on strong caffeine. You may notice an energy buzz and this, in turn, may help you lose weight but otherwise, this supplement seems underdosed compared to many others on the market.

Each serving is equal to one capsule which you take twice a day. Each bottle contains 60 capsules which are enough for one month’s usage and the supplement is suitable for vegetarians.

What Are The Side Effects Of Prime Labs Xtreme Slim?

Most of the potential side effects to Xtreme Slim relate to caffeine and may include jitteriness, anxiety, sleep disturbances, rapid heart rate, increased blood pressure, headaches, and nausea.

Other side effects may include abdominal pain, upset, stomach, diarrhoea, and dizziness.

How Much Does Prime Labs Xtreme Slim Cost?

Prime Labs Xtreme Slim is not expensive. Buy from the Prime Labs website and Xtreme Slim costs $19.99 for 60 capsules (1 months supply).

Shipping charges (USA only) are applied at the point of sale, and customers can pay via Amazon Pay or PayPal. You can get a 10% discount off the first order by claiming a discount code.

You can also buy Prime labs Xtreme Slim via Amazon where it is on sale for $19.99.

Our Verdict On Prime Labs Xtreme Slim

We are not impressed by Xtreme Slim. This supplement seems to offer little more than high strength caffeine and apart from the green tea, it contains low quantities of over touted extracts that are unproven to work. Raspberry ketones, green coffee bean, and garcinia cambogia are all well known yet come with very little real evidence and even if they did, at only 130mg per serving for each, they do not conform to the little clinical investigation carried out on each one.

There are some good points; the ingredients may be low but apart from the caffeine strength, at least this information is provided. In addition, green tea and caffeine may help weight loss and the supplement is not expensive. However, there seems to be little reason for choosing this supplement over many others on the market. In our opinion, Prime Labs Xtreme Slim is just not good enough to approve.

We do not recommend Prime Labs Xtreme Slim to the Watchdog readers.

phentaslim bottle
The most popular consumer choice in 2019 is Phentaslim.

With a combination of proven ingredients, superb customer service and a 60-day money-back guarantee, Phentaslim is making big waves in the diet world.

Find out why thousands of people are choosing Phentaslim to achieve their weight loss goals, and why it's also the editor's top selection.

Read the Watchdog Phentaslim review here.

Prime Labs Xtreme Slim Key Features

Prime Labs Xtreme Slim is a weight loss supplement in capsule form that you are advised to take twice a day.

The supplement contains some well-known weight loss ingredients, all of them once touted by Dr Oz a few years back and now familiar names in the diet pills industry. These are raspberry ketone, garcinia cambogia, and green coffee bean extract. In addition, Xtreme Slim contains green tea extract and caffeine anhydrous.

Prime Labs Xtreme Slim Facts

  • Each bottle contains 60 capsules (1 month’s supply)
  • You can only contact Prime Labs via email or Facebook messenger
  • Contains a strong form of caffeine called caffeine anhydrous

All the ingredients are in equal quantities per capsule (130mg) however the caffeine content will feel much stronger than this low ish serving size suggests. This is because caffeine anhydrous – a highly refined crystallised form of caffeine suitable for supplements, is much stronger than the caffeine in your average cup of coffee. According to nutritional experts, caffeine anhydrous can be as much as 28 x times stronger per dose than ordinary caffeine. Check out the ingredients tab to find out more.

How to Take Prime Labs Xtreme Slim

  • Take 1 capsule twice a day with a 6oz glass of water

Prime Labs is a US-based supplements company. The company has a product website and there is also a Facebook page, which mainly displays pictures of muscle men in shorts doing manly things like walking through spray carrying machinery and sweating. Strangely, it is not very popular with only around 1250 followers at the time of writing.

You can contact Prime Labs via Facebook messenger or via email from the Prime Labs website. Although the company information claims that you can obtain customer support 24/7, there is no customer phone line so you do have to wait for the company to respond to your email or message via Facebook. Is this 24/7 support? Not really, in our opinion!

Prime Labs Xtreme Slim Concerns:

  • May cause caffeine related side effects
  • There is a money-back guarantee advertised but with no further information about how to claim your money back or where to return the product, this may not be as good as it looks
  • High proportion of Amazon feedback looks fake
  • No background information to Prime Labs; no 24/7 support as claimed

We have covered some Prime Labs supplements before including Prime Labs Thermo Burn, a fat burner, and testosterone booster Prime Test.

What Does Prime Labs Xtreme Slim Claim To Do?

According to the advertising, Xtreme Slim is an Advanced Fat Burner that helps you burn, curb, and shred.

It is “JAM-PACKED with all-natural ingredients. Inside you’ll find great ingredients like green tea, raspberry ketone, garcinia cambogia, and much more!”

The caffeine content is mentioned too,

“Burn Fat – Boost Energy. Quality caffeine anhydrous in every veggie capsule. Feel the energy soar through you. Get your body moving and shed pounds.”

The supplement is aimed “at people who want to make the most out of their workouts, feel more energy, and most of all, need help losing weight.”

According to the product information, there is a 100% money-back guarantee if you are not satisfied.

Does Prime Labs Xtreme Slim Work?

It might work. The caffeine content is likely to be noticeable, and this combined with the green tea may help increase the speed of the metabolism and help weight loss.

Research suggests that a green tea and caffeine combination has the potential to produce significant effects on metabolic targets such as thermogenesis, and fat oxidation that is more effective than either of the two ingredients working alone. However, effects will depend upon your own tolerances and usual caffeine consumption so it might not work for everyone. Source

There is not a whole lot of convincing evidence for the rest of the ingredients and in such low servings as here; we cannot see the rest of the formula being very effective.

What Are The Ingredients of Prime Labs Xtreme Slim?

Each capsule is equal to one serving.

  • Green Coffee Bean (130mg): Research results indicate that slight weight loss may be caused by chlorogenic acid present in unroasted or green coffee beans but there is very little real evidence. The safety and the effective dose has not been established. Scientists report, “More rigorous trials are needed to assess the usefulness of Green Coffee Extract as a weight loss tool”. Source
  • Raspberry Ketone (130mg): Natural chemical derived from the enzymes found in the fragrance of red raspberries and which may affect a hormone in the body called Adiponectin. This hormone is important for appetite control and fat burning. Animal testing suggests raspberry ketone increases metabolism, but it has not been tested on humans. Source
  • Garcinia Cambogia (130mg): Sour fruit which grows in Asia and is high in hydroxycitric acid. According to some research, HCA prevents a natural digestive enzyme called alpha amalyse from breaking down the carbs you eat for storing them into fat and instead some of these undigested carbs pass through your body. Research is not conclusive and as serving size is generally around 500mg, it is unlikely to work here.
  • Caffeine Anhydrous (130mg): This is a lot more concentrated than ordinary caffeine so is stronger than the caffeine in coffee, although chemically it is the same. Caffeine Anhydrous is more suitable for use in supplements and energy bars but because it is more potent, side effects can be an issue. It is estimated that caffeine anhydrous can be as much as 28 x times stronger than regular caffeine.
  • Green Tea (130mg): Clinical research has found that green tea has proven health benefits, and the antioxidants (ECGC epigallocatechin-3-gallate and polyphenols) that it contains may have anti-obesity and fat burning properties.

Does Prime Labs Xtreme Slim Have Any Side Effects?

This supplement may have side effects. Many of these may relate to caffeine and may include:

  • Jitteriness
  • Anxiety
  • Sleep disturbances
  • Rapid heart rate
  • Increased blood pressure
  • Headaches
  • Nausea

Other side effects may include:

  • Abdominal pain
  • Upset stomach
  • Diarrhoea
  • Dizziness

Not suitable for individuals under 18. Avoid if you are pregnant or breast feeding. Speak to your physician before use if you are taking prescription medication or have an underlying medical condition.

Are There Any Customer Reviews For Prime Labs Xtreme Slim?

There are customer reviews for Xtreme Slim posted on Amazon. At first glance, these look good because the majority of opinions are positive. However, according to scam software most of these are likely to be fake.

Positive customer comments include,

Weight loss is a hard long journey… at least for me it is. I have invested in a lot of supplements and i can testify that Xtreme slim helps me to feel motivated to continue on… i see results and i feel better!

This really seems to do as it claims! I’ve been using it for two weeks and have already lost three pounds. I like that it didn’t make my heart race like a lot of other weight loss pills seem to do and it doesn’t cost an arm and a leg.

This customer was scared of the caffeine content and found it made her hungry,

I’m afraid to take them as much as other people do. You can tell there’s caffeine in them. It gives nice energy but I was STARVING by the end of the day and not sleeping if I took these too late…

This customer felt the caffeine was dangerously high,

…After taking just one pill, I felt anxious, and heart rate went up. Yes there are other ingredients, but I don’t need to buy pills to get caffeine, I can do that at home much cheaper. To make matter worse there’s an additional 130mg of caffeine, as if it didn’t have enough caffeine? This is going to give someone a heart attack!

Does Prime Labs Xtreme Slim Offer a Money-Back Guarantee?

A money-back guarantee is advertised on the Prime Labs website. But, with no further details about to claim it, and no terms and conditions provided it does not look very convincing. You can contact Prime Labs by email via the website or by Facebook messenger.

Where Can I Buy Prime Labs Xtreme Slim?

You can buy Prime Labs Xtreme Slim direct from the Prime Labs website or via Amazon USA.

This supplement does not seem to be available to customers outside the USA.

How does Prime Labs Xtreme Slim compare to Phentaslim?

Criteria Prime Labs Xtreme Slim Comparison Phentaslim comparison
Clinically Proven Ingredients
Side Effect Free
Positive Customer Reviews
24/7 Support
Money-back Guarantee
Prime Labs Xtreme Slim

2.3 out of 5
Prime Labs Xtreme Slim Rating

The Diet Pills Watchdog does not recommend Prime Labs Xtreme Slim.

  • Effectiveness
  • Safety
  • Price / Guarantee

#1 Consumer Choice 2019: Phentaslim

Phentaslim is Diet Pills Watchdog Approved


Thousands of customers have cut the fat with this fast and powerful thermogenic fat burner. Can suppress appetite, boost energy levels and elevate mood without the jitters.

  • Over 100,000 satisfied customers
  • Manufactured in a GMP facility
  • 60-day money-back guarantee
  • FREE shipping and buy 3 get 1 FREE offers!
See our Full Review here

Disclaimer: Our reviews and investigations are based on extensive research from the information publicly available to us and consumers at the time of first publishing the post. Information is based on our personal opinion and whilst we endeavour to ensure information is up-to-date, manufacturers do from time to time change their products and future research may disagree with our findings. If you feel any of the information is inaccurate, please contact us and we will review the information provided.

Have Your Say

Add your comment

We'd love to get your opinion. Please keep it clean and stay on topic, no spamming. Comments are moderated before being made live. Your email address will not be published.
We cannot give advice about medical conditions or prescription drugs. Please direct specific medical questions to your doctor.

This site uses Akismet to reduce spam. Learn how your comment data is processed.

Get the conversation started by leaving your comments using the form above.