Updated May 9, 2019.
Published Jan 6, 2017.

Quadralean is a stimulant-free fat burner from RSP Nutrition. It seems to have a lot of users in the bodybuilding world, who take it to help them cut down body fat for competitions. The ingredient profile suggests that it might not actually be strong enough as a general use weight-loss aid, it may be more beneficial to the bodybuilders who are looking to tweak the fine margins of their fat and muscle mass. The 30-capsule bottle doesn’t seem to be great value for money, as it only lasts for five days, but the 150-capsule bottle will last for 25 days, and isn’t that much more expensive than the smaller one.


  • Stimulant free
  • Ingredient quantities provided
  • May boost energy levels


  • Lots of capsules to take
  • Not a strong weight loss aid
  • No money-back guarantee
There are many fat burning products on the market, but many of them have a wide variety of stimulant ingredients. Quadralean may be an alternative for those who are looking for a fat burning diet pill that is free of stimulants.

We take an in-depth look below into Quadralean to see how effective it really is.

Quadralean Overview

What you need to know about Quadralean

Quadralean represents an alternative to diet pills containing stimulants. This makes the product open to use by consumers who are unable to take stimulants; having said this, consumers should always check with their physician before using any diet pill or supplement if they have pre-existing health conditions.

The product does have plenty of positive reviews from customers who use it to cut for competitions, stating that it does suppress their appetite somewhat and boosts their energy, helping them through their rigorous training regimens.

However, the product does not seem to be strong enough to act as a strong weight loss aid for those who are just starting their weight loss journey, or who are not working out daily. Some consumers have also reported a variety of side effects.

What are the side effects of Quadralean?

Customer reviews mention a variety of side effects, including jitteriness, nervousness, a bleeding stomach, upset stomach, diarrhoea, and increased heart rate.

How much does Quadralean cost? offers 30 capsules of Quadralean for £12.68. A single larger bottle containing 150 capsules costs £26.19. regular offers discounts and multi-buy offers on their products, including on RSP products such as Quadralean.

The official website for RSP Nutrition also sells their own product range. The 150 capsule bottle costs $29.99, and the 10 serving sized bottle (30 capsules) is available, costing $12.99.

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Quadralean Key Features

Quadralean is a stimulant free weight loss aid that, according to its manufacturer, ‘supports fat loss, lean muscle mass, increased metabolism and appetite control’. One of the main benefits of this product, and other stimulant free weight loss aids, is that they may be suitable for those who cannot use caffeine and synephrine based products.

Quadralean Key Points

  • Manufactured by RSP Nutrition
  • 30 and 150 capsule bottle sizes available
  • Stimulant Free Weight Loss Capsule

The manufacturers of Quadralean are an American company called RSP Nutrition based in Miami. They make a variety of weight loss and exercise supplements, as well as a limited range of sports apparel. They state:

Our mission is to provide top quality nutritional supplements that maximize the results of functional sports training for athletes of all levels.

Their contact information is available on their official website.

How to Take Quadralean

Take 3 capsules on an empty stomach twice daily or as recommended by a healthcare practitioner. Do not exceed 6 capsules in a 24 hour period. Based upon the recommended usage, a 30 capsule bottle will last for 5 days, whilst a 150 capsule bottle will last for 25 days.

Whilst raspberry ketone and Garcinia Cambogia are heavily promoted by supplement companies as great weight loss aids, unfortunately the clinical evidence does not support this; raspberry ketone has never been tested in humans for weight loss, and so although it does aid weight loss in rats, it may have no impact upon weight loss in humans.

Quadralean Concerns:

  • No money-back guarantee
  • Lots of capsules to take
  • Significant cancellation fee from manufacturer

Garcinia Cambogia has been found to aid minor weight loss in some studies, whilst in other studies no changes to appetite nor metabolism were noted. There was in fact one study in which the placebo group lost more weight than the Garcinia Cambogia supplemented group.

Conjugated Linoleic Acid may help to reduce fat mass, but does not seem to impact weight loss overall, and is considered to be fairly unreliable. Carnitine in its various forms helps relieve fatigue, helps in building muscle, and may aid with burning fat in some people.

What does Quadralean claim to do?

The key benefits of Quadralean are described as follows:

  • Control appetite
  • Mobilize fat stores
  • Increase energy
  • Accelerate metabolism

Does Quadralean work?

Whilst there are many customers who are happy with the product, there are still some people who either noticed no results in terms of weight loss, changes to energy levels or appetite suppression, or who experienced side effects.

The ingredients list is mixed in terms of clinical support; raspberry ketone has never been studied in humans for weight loss, and is only thought to be a fat burner from lab studies in rats and in test tube trials.

Garcinia Cambogia is currently a very popular diet pill ingredient thanks to the Oz effect of being promoted on the Dr. Oz show. However, clinical evidence is mixed, and even the supporting clinical evidence does not show very dramatic results.

Conjugated Linoleic Acid is a fat burner, but it appears to be unreliable and not very strong. Because of the proprietary formula of carnitine supplements, it is not possible to tell if any of the three carnitine supplements are being delivered in sufficient quantities to make a huge difference to weight loss, as each requires very different levels of supplementation to see results.

In summary, Quadralean may work to aid moderate weight loss at best, but it is not a predictable weight loss aid.

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Quadralean Ingredients

Below is a list of the ingredients used in Quadralean. The ingredient quantities provided are per serving of three capsules. Consumers can take up to two servings per day, a maximum total of 6 capsules in any 24 hour period.

  • Clarinol® (Conjugated Linoleic Acid) (500 mg): Naturally found in dairy products and beef, conjugated linoleic acid may help to reduce body fat, but may not cause changes to body weight. Human studies of CLA have produced contradictory results, and it is described as not only a relatively poor fat burner, but also an unreliable one. Source
  • Garcinia Cambogia (500 mg): Test tube and animal research suggests that HCA, the active compound in Garcinia Cambogia, may be helpful in weight loss because of its effects on metabolism. Whilst some studies have found it has no effect upon either appetite or metabolic rate, others showed increased weight loss compared to the use of a placebo. Source
  • Raspberry Ketones (250mg): Whilst there is a small amount of evidence that raspberry ketone can cause weight loss in rats, there have never been any human trials on the potential weight loss effects of raspberry ketone. Source
  • QuadraLean™ Carnitine Blend (500mg): This blend contains three variations of Carnitine, which are all types of amino acid naturally produced in the body.
  • Acetyl-L-Carnitine: There is some evidence that supplementation of acetyl-l-carnitine can reduce body fat, although the strongest results were seen in the elderly. The ingredient also boosts energy levels, and is used to treat fatigue. Source
  • Propionyl-L-Carnitine: helps the body to produce energy. Used in combination with acetyl-l-carnitine to treat chronic fatigue. Source
  • Carnitine Tartrate: One study found that supplementation of L-carnitine, L-tartrate reduced muscle tissue damage from exercise and sped up recovery time. Source

Quadralean Side Effects

The manufacturers of Quadralean do not mention any potential side effects. They also seem to rely upon the statement that the product is stimulant free to indicate it has fewer side effects than stimulant based diet pills. However, there are some customer reviews that mention a variety of side effects, including jitteriness, nervousness, a bleeding stomach, upset stomach, diarrhoea, and increased heart rate.

Carnitine supplements can cause a variety of side effects, including nausea, vomiting, stomach pain, weakness, and chest pain. It can also cause a “fishy” odour of the urine, breath, and sweat. Garcinia Cambogia can cause dizziness, dry mouth, headaches, and diarrhoea.

Raspberry ketone has not been researched in humans in medicinal doses, and so there are currently no known side effects from consuming raspberry ketone in high doses. This does not necessarily mean that this ingredient is side effect free.


If you have any health condition, are pregnant, breast feeding or taking medication, ask a physician before use. Keep out of reach of small children. Not suitable for those under the age of 18.

Quadralean Customer Feedback

There are numerous customer reviews for Quadralean on

I’ve been using Quadra Lean for almost 2 months and have enjoyed it a lot. For it being non-stimmed, I didn’t know if I was going to like it or not. I can honestly say that it’s been an extremely useful part of my regime. Since I’ve started taking them, I’m dropped about 12 lbs which is pretty good. Slow methodical process. Can’t give all credit to Quadra Lean because obviously I’ve worked hard and watched my diet, but I love that it’s not stimmed and I can stack it, and I can use without harsh effects. Loving it!!!!!

Better than any stimulant thermogenic and stimulant free fat loss product out there. I don’t feel miserable after taking it and have had the best results I have ever had with this product and all RSP products. I love that it uses natural ingredients and vitamins our body already produces. I recommend this to anyone out there who wants to lose fat and keep it off for the long term. I have been taking this for months and have had great results and don’t plan on stopping because there is no need! Buy some now!!!

Quadralean is amazing! This is my second time going through a cutting phase and what a difference it is this time around with Quadralean! The funny thing is, the pills smell amazing from the raspberry ketone! No one ever mentions it but when you open up the bottle you’ll see what I mean. Buy and don’t regret!

The product is also sold on amazon, where customers have left a variety of reviews:

Saw zero results. Would not recommend.

I would not recommend this product to anyone. It did not work and made my stomach bleed. It started three days after taking the product and stopped within 48 hours of throwing the product in the trash. I tried it to assist with my weight loss but it did not work.

Made me jittery and nervous. Also gradually caused my stomach to become upset when I’ve never had a problem with that before. Almost two months after stopping the pills, stomach is still not fully recovered. I could never recommend this product.

Bought this product and took 6 pills/day (as directed) from 02.08.14 thru 03.04.14. I did this in conjunction with a healthy diet and regular exercise, product did absolutely nothing. No appetite suppressing, no additional fat burn, no speedier recovery, no additional weight loss (all things this product advertises). DO NOT BUY, spend your $30 somewhere else.

Quadralean Money-Back Guarantee

There is no money-back guarantee provided by the manufacturer. They have a 30-day returns policy on unopened products. However, consumers should be aware that RSP Nutrition do have a $15 cancellation fee for orders that are cancelled before the product has been dispatched. do have a fairly comprehensive returns and exchange policy, and often offer store credit or an exchange if a return is not possible.

Where To Buy Quadralean offers 30 capsules of Quadralean for £12.68. A single larger bottle containing 150 capsules costs £26.19. regular offers discounts and multi-buy offers on their products, including on RSP products such as Quadralean.

The official website for RSP Nutrition also sells their own product range. The 150 capsule bottle costs $29.99, and the 10 serving sized bottle (30 capsules) is available, costing $12.99.

Watchdog Verdict

Quadralean usage instructions require 6 capsules to be taken per day, which some people may find to be excessive. This large dosage means that the smaller bottle lasts for only 5 days, and the larger bottle will last for 25 days. There is no money-back guarantee on this product.

In terms of the ingredients profile, we are not that impressed. Whilst carnitine supplements may help some people, such as those who are undertaking a bodybuilding style workout regime, the other ingredients do not have clear and undivided clinical support. The studies with positive results still only suggest a mild boost to fat burning, which may be unpredictable between individuals. Garcinia Cambogia and Raspberry Ketone are not the strong fat burners that many sites would have you believe.

Overall, we cannot recommend Quadralean. Whilst it may be beneficial to some, and is a stimulant free alternative to the many high-stim products available, it contains too many mediocre ingredients to be considered a good weight loss aid.

How does Quadralean compare to Phentaslim?

CriteriaQuadralean ComparisonPhentaslim comparison
Clinically Proven Ingredients
Side Effect Free
Positive Customer Reviews
24/7 Support
Money-back Guarantee

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

2 comments on 'Quadralean'

  1. this is my second time taking it. first time, went well, i lost weight. this time around though, my heart palpitating !

  2. Quadralean is one of the best on the market, it’s been a winner on most ever other website other than this one. Products that offer a money back guarantee need to do that to get their product off the ground, RSP is already a proven winner and doesn’t need to draw in customers with gimmicks. ..

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