The Best Non-Stim Fat Burners for Maintaining Muscle, Appetite Suppression, and More

Here are the best fat burners you can take any time of day.

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When used judiciously — and we emphasize the word ‘judiciously,’ meaning used in conjunction with a well-planned diet and workout routine — the best non-stim fat burners can potentially help in a fat loss journey (though it’s worth noting diet and activity levels will still be the largest contributors in any weight loss plan). Whether you’re preparing for your first bodybuilding show or just focused on burning fat for your own benefit, it may be worth looking at these supplements.

Most fat burner products contain stimulants, typically caffeine (although sometimes it’s yohimbine). Plenty of people are a little sensitive to these ingredients, or they want to take their pills at night time or any time they don’t want to get jacked up.

Editor’s note: The content on BarBend is meant to be informative in nature, but it should not be taken as medical advice. The opinions and articles on this site are not intended to diagnose, prevent, and/or treat health problems. Speak with your physician before undertaking any new weight loss regimen.

Best Non-Stim Fat Burner

There can be a lot to think about when going into a fat burning phase including appetite, satiety, and cravings. This pick hits a lot of the essentials we like to see in a non-stim fat burner. It’s 100 percent natural, it sports a decent price tag, and has an ingredient list that can help keep calorie-burning, crave curbing, and appetite suppression in mind.

Legion Phoenix Stimulant-Free Fat Burner

This non-stimulant fat burner is loaded with ingredients that could help with metabolism and releasing fat stores. Legion’s Phoenix Stim-Free Fat Burner includes 100mg of Thai Ginseng, which may increase the rate at which you burn calories. It includes 5-HTP, which can potentially reduce hunger and cravings. It also contains possible fat-burning ingredients, such as 30 mg of grains of paradise, 50mg of forskolin, and 8mg of fucoxanthin. This formula is chock-full of ingredients that may aid you in your fat-loss quest. It also has a solid price tag of $0.40 per pill making this an affordable fat-burner.

Legion Phoenix
Legion Phoenix
Legion Phoenix

Legion's Phoenix comes with an extra absorbable form of synephrine and a high dosage of EGCG to promote its fat-burning properties. Each five-capsule serving provides 834 milligrams of Citrus Aurantium.

Who Should Buy Legion Phoenix Stimulant-Free Fat Burner

  • People who are looking for a fat-burner that also has the possibility to curb appetite, cravings, and speed up the fat-burning process will love the potential this formula creates. 
  • Anybody who likes a stacked supplement can benefit from this eclectic and well-rounded ingredient list.
  • Athletes; you may enjoy the 150 mg of l-dopa, which may help increase focus and reduce fogginess in your brain.

Who Shouldn’t Buy Legion Phoenix Stimulant-Free Fat Burner

  • People who are looking for added fiber to potentially help with appetite suppression will want to look elsewhere. 
  • Folks who want a fat burner with a short ingredient list may find this a bit robust.

From potentially burning fat, curbing cravings, suppressing appetite, boosting focus, and keeping cortisol levels moderate, Legion made an ingredient list that thought of everything when it came to the possibility of burning fat.

[Related: The Best Types Of Supplements For Performance, Weight Loss, And Health]

Best Non-Stim Fat Burner for Appetite Suppression

Appetite can be a huge barricade when it comes to hitting your fat-loss goals. With movement and calories burned correlating to how hungry you become, it can be a difficult balance to be burning the right amount of calories for fat-loss while also making sure you are satiated. Leanbean’s appetite suppression may be the ticket to finding the balance.

Leanbean Fat Burner

Leanbean has a dozen ingredients, but it has a strong focus on what might be the most important aspect of weight loss: your appetite. Leanbean contains 12 ingredients. A big part of the appeal is glucomannan, a thickener made from the root of the konjac plant that research suggests can suppress appetite. (1) The ingredients list also has other fat burner stalwarts like cayenne pepper and green tea extract, and black pepper extract, which a 2016 paper found may increase metabolism. (2)

Leanbean fat burner seems a little low in green coffee extract and raspberry ketones, but we were pretty impressed. It contains a small amount of natural caffeine — 50 milligrams — which is less than a cup of coffee.


This fat burner, geared towards women, promotes fullness with three grams of Glucomannan, and has B vitamins for more energy and focus. Plus, you'll find 50mg of caffeine for a subtle boost in energy. 

Who Should Buy Leanbean

  • People who have trouble with their appetite during weight loss, LeanBean has a strong emphasis on this aspect.
  • Anybody who likes cayenne, garcinia Cambogia, turmeric, or green tea extract — these popular fat burner ingredients are well dosed in LeanBean.

Who Shouldn’t Buy Leanbean

  • People with a sensitivity to caffeine. The amount found in LeanBean is less than 10 percent of a small cup of coffee, but it’s worth mentioning.
  • Folks who like the green coffee and raspberry ketones, it’s a little low on these ingredients.

LeanBean’s tiny amount of caffeine may disqualify it for some consumers, but for the average person, it’ll be barely noticeable, and it’s otherwise a terrific product.

[Related: Intermittent Fasting 101: A Guide To Benefits, Muscle Gain, And More]

Best Non-Stim Fat Burner for Sleep

Legion Phoenix Stimulant-Free Fat Burner has a strong ingredient list to potentially help you burn fat and curb appetite and cravings — but it also has an added benefit of ingredients that may aid in your sleep, and impact your memory of your dreams.

Legion Phoenix Stimulant-Free Fat Burner

Legion Phoenix Stimulant-Free Fat Burner has a stacked list of ingredients that may aid you in your weight-loss journey. Among the list of ingredients is caralluma fimbriata extract (CFE) which has been shown to reduce stress and anxiety in adults (3). When our stress and anxiety is lowered, the outcome may lead to better sleep.

Another study found that there is a statistically significant relationship between high stress and poor sleep, meaning it can be extremely helpful to lower stress levels to improve sleep quality (4). CFE comes in at 1,000 mg per serving in the Phoenix blend, making it a helpful ingredient in this tool box to potentially lower stress and cortisol levels, and lead to better sleep, and in turn, better fat-loss capabilities. This ingredient list also contains 5-HTP, a natural serotonin booster, which can potentially improve mood, lessen anxiety, and give you a better night’s sleep, especially if you suffer from insomnia (5).

Legion Phoenix
Legion Phoenix
Legion Phoenix

Legion's Phoenix comes with an extra absorbable form of synephrine and a high dosage of EGCG to promote its fat-burning properties. Each five-capsule serving provides 834 milligrams of Citrus Aurantium.

Who Should Buy Legion Phoenix Stimulant-Free Fat Burner

  • Those who are looking to possibly lower their stress and cortisol levels, and in turn, may end up with a better night’s sleep will appreciate the addition of CFE and 5-HTP in this formula. 
  • Athletes who want a fat burner with the addition of ingredients such as l-dopa, which may curb cravings and appetite.
  • Anyone who wants ingredients that may help resolve insomnia and boost your mood will like the ingredients list on this product — especially 5-HTP. 

Who Shouldn’t Buy Legion Phoenix Stimulant-Free Fat Burner

  • Folks who are looking for a basic formula may want to look elsewhere for a smaller ingredient list. 
  • Someone looking for a supplement fully geared towards sleep may want to look for a fat burner or other supplement that has sleep at the forefront— this supplement has the added benefit of ingredients that may lead to better sleep, but the focus is generally on fat burning.

Legion’s Phoenix Stimulant-Free Fat Burner is ideal for those who want their fat burner to possibly aid as a sleeping agent, as well. This formula contains 5-HTP, as well as CFE that might lead to lowered stress levels, and potentially, improve your sleep.

[Related: The Lifter’s Guide To Magnesium: What This Nutrient Does For Strength]

Best Non-Stim Fat Burner To Reduce Cravings

Cravings are one of the fore-front issues when it comes to fat-loss. This formula contains natural appetite suppressants, which can lead to a decrease in cravings as well.

Leanbean Fat Burner

The best fat burners, in our opinion, impact fat loss in multiple ways: boosting metabolism, appetite suppression, and increasing energy and focus. Leanbean came out on top because of its potent dosage and research-backed ingredients. This fat burner contains glucomannan, which can act as a natural appetite suppressant (thereby helping to reduce your cravings), and choline, which can help with fat metabolism.

Plus, you’ll find vitamins B6 and B12, which can help with your energy throughout the day. This product is marketed to women, but it’s a solid non-stim fat burner across the board — one of the only downsides is that you do have to take six capsules a day for a full dose. It’s also worth noting that this product does contain 50mg of caffeine, which is much less than a single cup of coffee, but not inconsequential. 


This fat burner, geared towards women, promotes fullness with three grams of Glucomannan, and has B vitamins for more energy and focus. Plus, you'll find 50mg of caffeine for a subtle boost in energy. 

Who Should Buy Leanbean

  • Anyone who wants a variety of ingredients working in concert to increase fat loss and energy expenditure.
  • People interested in energy boosters: Vitamins B6 and B12 are key for maintaining normal energy levels. 

Who Shouldn’t Buy Leanbean

  • Those who don’t want to have to take a lot of pills. Leanbean requires six daily. 
  • Anecdotally, it might not be ideal for people with very sensitive stomachs as the glucomannan can be harsh on some.
  • If you want a product free of caffeine entirely, you can find other options on this list that will work for you — this supp contains 50mg of caffeine. 

We like Leanbean for its wide variety of fat burning and appetite suppressing ingredients. If you’re okay with taking a decent number of pills, this supplement is the way to go to help suppress your appetite or reduce cravings overall. 

[Related: Could Baking Soda Be The Best Workout Supplement You’ve Never Tried?]

Best Non-Stim Fat Burner for Maintaining Muscle

Losing muscle can be the scariest part of trying to get leaner. With Transparent Labs Fat Burner, your shreds don’t have to come at the expense of your muscle gains. 

Transparent Labs Stim-Free Fat Burner

Transparent Labs has two different fat burners, one of which has stimulants. This non-stim fat burner is high in ingredients that could help with retaining hard-earned muscle mass. The first ingredient on the list for this supplement is acetyl l-carnitine, which one study found to have been significant in increasing muscle mass (6). Although this supplement is geared toward fat burning, the added 750 mg of acetyl l-carnitine gives it the benefit of potentially maintaining your muscle mass while still allowing you to pursue fat loss goals. 

In addition to this line-up is the ingredient rhodiola rosea, a supplement that one study found to have effects in reducing lactate levels, and skeletal muscle damage after intense workouts (7). With the addition of rhodiola rosea, you may also reap the benefits of quicker recovery in order to hit the gym hard and maximize your gains.

10% Off
Transparent Labs Fat Burner Stim-Free
Transparent Labs Fat Burner Stim-Free
Transparent Labs Fat Burner Stim-Free

This product uses science-backed doses of cayenne, 5-HTP, and Coleus Forskolin to aid fat loss without the use of jitter-inducing supplements. Use the code BARBEND10 for 10% off!

Who Should Take Transparent Labs Stim-Free Fat Burner

  • Folks who want their fat loss supplement to be as kind to maintaining their muscles as possible will appreciate the addition of acetyl l-carnitine here. 
  • Bodybuilders focused primarily on muscle gain and/or retention during a cut.
  • Those who are looking for a high quality supplement at a reasonable price as this supplement is less than a dollar per serving.

Who Shouldn’t Take Transparent Labs Stim-Free Fat Burner

  • People who prefer caffeine in their fat burners. 
  • Anyone who is looking for a stacked supplement may like others on our list for possibly improving their sleep quality, or aiding in their recovery. 

This product doesn’t have any caffeine, and so it may not give the jolt of energy needed to athletes who train first thing in the morning. Beyond that, this is an excellent pick for those trying to maintain hard-earned muscle mass — note that it’s not guaranteed, but we think it is the best bet on the market.

[Related: Nutrition For Bulking: 10 Tips For Intelligent Muscle Gain]

Best Non-Stim Fat Burner for the Money

Reaching your fitness goals can get pricey regardless of what your desired outcome is. This can include gym memberships, food, and of course, supplements. This fat-burner may be the key to helping you unlock your fat burning potential without breaking the bank.

Kaged Clean Burn Stim-Free Fat Burner

Just because you’re on a budget doesn’t mean you can’t find a solid stim-free fat burner. This option may only contain six ingredients, but in the right combination, numbers don’t matter. You’ll find 400 mcg of chromium, 100mg Capsimax, 1000 mg of green-tea extract, and a serious helping of 3,000mg l-carnitine to name a few.The first three may lead to better fat burning, while the l-carnitine may also benefit muscle maintenance. Plus, at a serving size of two capsules, you get 90 servings per container, putting this product at a low cost of $0.33 per serving. 

Kaged Muscle Clean Burn
Kaged Muscle Clean Burn
Kaged Muscle Clean Burn

This product contains 33mg of capsicum extract, which can help increase your metabolism by raising your body’s internal temperature. In addition, you'll find l-carnitine, green tea extract, and gymnema sylvestre, which can also help with fat burn and weight loss, as well as blood sugar regulation. 

Who Should Take Kaged Clean Burn Stim-Free Fat Burner

  • Buyers on a budget who are looking for a great combination of fat burning ingredients at a lower price point will like the cost and label on this product. 
  • Anyone who wants a fat burner that contains l-carnitine, which can help release fat stores and may improve muscle maintenance. 
  • Folks who are looking to potentially boost fat burn in every dimension will appreciate the Capsimax in this line up, as it may help promote thermogenic activity in the body.

Who Shouldn’t Take Kaged Clean Burn Stim-Free Fat Burner

  • Customers looking for a more robust ingredient list can find one, but it will likely be at a higher price point. 
  • Anyone who wants ingredients that can help with appetite suppression will want to look elsewhere where that’s one of the main purposes of the fat burning supplement. 

If you’re on a budget but still want a fat burner that’s free of stimulants, this six-ingredient option provides a solid combination at a much lower price point than many of its competitors. 

Best Non-Stim Fat Burner for Women

Leanbean is a supplement specifically targeted to help women in their fat-burning phase. What better way to know you’re getting the most out of your supplement than when it is geared towards your demographic?

Leanbean Fat Burner

First, it’s important to note that Leanbean contains 50 milligrams of caffeine from the green coffee extract. So, it’s technically not completely free of stimulants, but it’s a low, low dose of coffee. Leanbean, which is targeted at women, encourages fat loss on three fronts: appetite, energy, and metabolism. It contains 12 ingredients, such as the dietary fiber Glucomannan to keep you full, Vitamins B6 and B12 to support healthy energy levels, and chromium picolinate to stimulate metabolism that can support calorie burn


This fat burner, geared towards women, promotes fullness with three grams of Glucomannan, and has B vitamins for more energy and focus. Plus, you'll find 50mg of caffeine for a subtle boost in energy. 

Who Should Buy Leanbean

  • Folks who can handle a small amount of caffeine, like 50 milligrams.
  • Anybody who is a snacker and could benefit from a slightly reduced appetite.
  • People who appreciate fully-dosed ingredients. Leanbean has 100% of the recommended daily allotment for vitamins and minerals. 

Who Shouldn’t Buy Leanbean

  • People who are ultra-sensitive to caffeine. Leanbean doesn’t have much, but it does have some. 
  • Folks who prefer more extras in their fat burner. Though Leanbean has products like acai berry extract, green coffee bean extract, and choline, the doses are relatively low. 

Leanbean is great for women who prioritize metabolic health and energy when looking to lose weight. 

Best Non-Stim Thermogenic Fat Burner

When it comes to burning fat, a thermogenic supplement can help to increase your body temperature in order to potentially create an environment in your body where more fat burning can take place.

Editor’s Note: This product contains Hordenine HCl, which is a known banned substance for athletes in the NCAA, Service Members, and possibly others, as well. As with any supplement, be sure to read the ingredient label thoroughly before making it part of your supplement regimen.

Huge Supplements Exterminate

Thermogenic fat burners can help increase your body temperature to potentially help you burn more fat. One of the main ingredients in this formula that may help with this is stearoyl vanillylamide — this fat burner contains 20mg of this ingredient, which can have a similar metabolism-boosting effect to capsicum and other hot peppers. You’ll also find 600mg of green tea extract, 200mg of l-tyrosine, and black pepper extract, which can help your body absorb the other ingredients at a more efficient rate. This fat burner is a little pricier than some others on this list at three capsules per serving with each serving costing $1.66.

Huge Supplements Exterminate
Huge Supplements Exterminate
Huge Supplements Exterminate

Huge Supplements Exterminate green tea extract, which can potentially increase your metabolism. It also includes naringin and white willow extract, both of which can help with fat loss and weight management. 

Who Should Buy Huge Supplements Exterminate

  • Folks who are specifically looking for thermogenic ingredients will like the stearoyl vanillylamide in this product. 
  • Anybody who wants a robust list of ingredients will appreciate the stacked list in this supplement.
  • People who want to make sure they’re getting the best absorption in their product will be happy to see black pepper extract making an appearance. 

Who Shouldn’t Buy Huge Supplements Exterminate

  • Anyone who competes in NCAA sports, who serves for our country, or who gets drug-tested for sport or any other reason may want to thoroughly check ingredients and your banned substance list before consuming this supplement.
  • People who are looking for a budget-friendly buy — this is not the least expensive option on our list. 
  • Folks who don’t want to have to take three pills per day will want to look elsewhere. 

Huge Supplements offers a thermogenic fat burning product that contains a stacked list of ingredients that may help you reach your goals by potentially increasing your metabolism. The added benefit of black pepper extract can help this product absorb better, as well. 

Best Non-Stim Fat Burner Pre-Workout

For those who prefer to take their fat-burner as a pre-workout in hopes of boosting your intra-workout fat-burning ability, this may be the product for you.

Transparent Labs Stim Free Pre-Workout

For those looking for a non-stim fat burner combined with their pre-workout, this product is your answer. Choline can help play a role in the metabolism of fat, and this pre-workout contains 500mg of choline bitartrate. In addition, you’ll find traditional pre-workout ingredients, like 6,000mg of citrulline malate, 4,000mg of BCAAs, 4,000mg of beta-alanine, and 1,300mg of taurine. You only need one scoop mixed with water for a full dose, but this product is a bit pricier due to the robust ingredients list. However, it does come in six delicious flavors — Strawberry Lemonade, Sour Grape, Blue Raspberry, Green Apple, Tropical Punch, and Orange.

Transparent Labs Stim Free Pre-Workout
Transparent Labs Stim Free Pre-Workout
Transparent Labs Stim Free Pre-Workout

An unusually powerful pre-workout that's packed with clinically effective doses of ingredients linked to everything from power to endurance. All of this without the use of caffeine or other stimulants.

Who Should Buy Transparent Labs Stim Free Pre-Workout

  • Folks who want a pre-workout that can double as their fat burner will like the choline in this pre. 
  • Those who like to take powder supplements. This pre-workout comes in six different flavors of powder. 
  • Customers who are looking for a robust ingredients list. This is not just a fat burner — it can also help provide energy and focus for a solid workout at the gym. 

Who Shouldn’t Buy Transparent Labs Stim Free Pre-Workout

  • Anyone who is on a budget will want to opt for one of the less expensive options on this list. 
  • Folks who are just looking for a stim-free fat burner. This is a pre-workout that contains fat-burning ingredients. 

If you’re already keen on taking pre-workout, this product will allow you to combine your pre-workout and fat burning supplements. While it may seem more expensive upfront, it can actually knock out two supplements in one go, which may actually end up costing you less in the long run.

How We Decided Our Picks

When assessing the usefulness of a fat burner supplement, we looked at several factors. Sure, it has green tea extract, but is that enough? Here’s what you should think about.

Fat Oxidation

Perhaps the most popular ingredient in “fat burners” as this means it helps to burn fat, or more specifically, it helps to increase the amount of energy you burn from stored fat compared to stored carbs. Popular examples include green tea extract and l-carnitine.

Increasing Metabolic Rate

Increasing metabolic rate can be described as whether or not a product burns more calories. A popular example is cayenne peppers, which some research has found to burn an extra 50 or so calories, depending on the dosage. Other examples include hordenine and synephrine, found in Legion’s Phoenix.

Appetite Suppression

There are a few ways appetite suppression works. A popular one is with ingredients that expand in the stomach, like glucomannan (found in LeanBean) and psyllium husk. A more popular method is 5-HTP, which may help with serotonin production, which appears to help with satiety and cravings.


Scores of fat burners hide their ingredients behind proprietary blends so that the customer doesn’t know the exact amount of each. It helps them to keep their formula from being stolen by competitors, sure, but it also means that you don’t know how effective the product is.

What To Consider Before Buying

These products are prone to exaggeration on the part of the manufacturers and wishful thinking by consumers. Make sure you’re mindful of these points.

Know Your Calories

Way too many people think adding a fat burner, with no other changes to their diet, will produce a six-pack. Fat burners might help burn some extra calories, but if you don’t know how many calories you’re burning, it’s a moot point. Find out your ideal calories with a macro calculator — then adding a fat burner might give you some support.

Manage Your Expectations

It’s generally understood that a pound of fat loss per week is very fast, and you can maybe get to two pounds if you’re quite overweight or obese. Anyone who says they lost 20 pounds in a month is exaggerating — you need to be patient.

Exercise Regularly

Many of the ingredients linked to fat oxidation produce their best results with a solid exercise routine: they’re meant to increase the amount of fat burned during exercise. In addition, exercise helps to burn more calories and improve body composition. Taking a fat burner without a workout routine may produce suboptimal results.

Speak to a Physician

This is absolutely key. It would be best if you never made any changes to your diet or exercise regimen without first speaking to a doctor. This is especially the case with easily misunderstood supplements like fat burners.

Wrapping Up

As you can see, there are many things to keep in mind when choosing the best non-stim fat burner, even when you’re trying to uncomplicate the ingredients list by removing caffeine. The right product totally depends on your own preferences, but we’ve found many like those that operate on multiple fronts: appetite, fat oxidation, and increased thermogenesis. Whatever your preference, there’s likely an option for you on this list.


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