QuadraLean Review – Top Selling Stimulant Free Fat Burner of All Time





Formula / Ingredients


Safety Rating


Customer Feedback


Value For Money



  • Very Popular
  • ALCAR is a Good Ingredient
  • It's a Decent Non-Stim Option


  • Won't Have Many Short Term Effects
  • Overhyped
Editors Tip - Use the highest rated fat burner for 2022 - click here

QuadraLean is one of the highest rated weight loss supplements ever, and it’s in the top two for the stimulant free category.

RSP Nutrition call the latest release of their flagship stim-free fat burner Quadralean 2.0.

There’s also a version of Quadralean that has stimulants in the formula, which the company refers to as Quadralean Thermogenic.

Why “Quad”?

Simple: there’s 4 Key Factors to weight loss with Quadralean, according to RSP:

  • Appetite Control
  • Fat mobilization/transportation
  • Energy Boost
  • Metabolism acceleration

Quadra Lean review

The formula contains 5 ingredients and zero frills. So why is it so popular to dieters, bodybuilders and a lot of people in between who are looking to shed some fat?

An immediate response to that question is: it probably works. However, I have a feeling it’s more to do with the fact that RSP were one of the first, or perhaps the first, sports supplement company(s) to manufacture a stimulant-free fat burner.

The product carved out a pretty good niche and it’s enjoyed a large customer base ever since.

The skeptic in me simply finds it difficult to accept that the 5 ingredients in stim-free Quadralean 2.0, at the dosages they are included at, can have that much of a fat reducing effect.

Let’s look at those ingredients and I’ll explain why.

Ingredients – Quadralean 2.0 Stimulant Free Formula

Like I said, there’s 5 ingredients. The below inclusion rates are for a 3 capsule serving, which RSP recommend taking twice daily.

Therefore to get the full recommended 6 capsule daily total you can double the below doses.

  • 750 mg – Conjugated Linoleic Acid (CLA) as Innobio®
  • 500 mg – Acetyl-L-Carnitine HCl
  • 250 mg – Green Tea (leaf) Extract (50% EGCG)25 mg – Aframomum Melegueta (Paradoxine®) aka Grains of Paradise
  • 120 mcg – Chromium (as chromium picolinate ChromMate®)

CLA - Conjugated Linoleic Acid facts

Conjugated Linoleic Acid (CLA) is a fatty acid that should theoretically induce fat loss but results from research are mixed and not hugely promising.

Quite a number of bodybuilders and athletes claim that CLA helps them retain lean muscle mass when on a calorie restrictive diet. The only study that found something close to this at doses approaching 1.5 grams per day (Quadralean max dose) followed overweight people.

That study even concludes that after the weight loss, the CLA didn’t improve body weight maintenance.

Acetyl-L-Carnitine (ALCAR) is more reliable than CLA, and has more going for it with respect to the number of benefits it can exert on the user.

Blood glucose, fatigue, lactate production, muscle soreness, inflammation and blood pressure may all be reduced with ALCAR supplementation.

There is good evidence for L-Carnitine’s fat metabolizing power but it needs to be taken with a carb-rich meal to work. ALCAR is more efficiently absorbed by the body and so doesn’t need the insulin spike to mediate its transport into muscle.

The dosages used in studies are generally more than what is included in QuadraLean but again, ALCAR can be dosed lower than straight l-carnitine. The research is compelling and I’d say this might be the most worthwhile ingredient in QuadraLean. .

Green Tea Fat Burning

Green Tea extract, and particularly the EGCG found in it is beneficial to fat loss at the 500mg / 1000mg doses.

One of green tea’s main fat reducing mechanisms is to inhibit an enzyme known as COMT, which itself breaks down catecholamines like noradrenaline (norepinephrine).

This makes it highly synergistic with caffeine and other stimulants which boost said catecholamines, but given the fact that Quadralean is stim-free, that effect is somewhat wasted.

Aframomum Melegueta – Paradoxine® aka Grains of Paradise has been found to increase Brown Adipose Tissue (BAT), also known as Brown Fat.

A reaction known as non-shivering thermogenesis can occur within BAT, which is something we use as babies when our ratio of brown fat is much higher. It’s basically a heat generating process alternative to shivering.

The process uses white fat as fuel to generate the heat, hence the theory that activating BAT will help burn visceral fat.

Chromium is a trending ingredient in weight loss supplements these days. It is included to reduce blood sugar spikes and increase insulin resistance.

It is essential for glucose metabolism and insulin function but supplementing it is not associated with consistent results in terms of fat loss. Chromium supplementation might have long term benefits to diabetics though.

QuadraLean – What’s the Verdict?

RSP Nutrition’s stim-free QuadraLean contains good ingredients but the CLA is not going to do that much for your fat loss efforts in my opinion.

I can’t tell you what’s kept it on best-selling lists for so long. It might be the price – Quadralean is pretty cheap compared to some other big brand products.

Perhaps it’s the accessibility – pretty much anyone, in most countries, can get hold of stim-free Quadralean because it doesn’t contain anything controversial.

For people following a healthy lifestyle – i.e. a nutrient-dense, calorie controlled diet and regular exercise – if you have a spare twenty bucks lying around then try it out for a cycle and see if it works for you.

If you do, let me know how you get on with it.

Best Fat Burners - Fat Burning Supplements

Best Fat Burners We have compiled our list of best fat burners based on research from criteria such as:
  • Clinical proof of ingredients in the formula
  • Recent studies conducted 
  • User feedback, opinion and comments
  • Safety both short term and long term
  • Value for money 
  • Customer service and refund policy

Click here to view best current fat burners of 2022

Leave a Comment