Diet and exercise have proven effective for weight loss, but some supplements can help speed the process. Hunter Burn is a good pick as one of the best fat burners for men in 2025. At just $3.00 per serving, Hunter Burn is packed with natural ingredients, making it a potent natural fat burner with a low risk of serious side effects.
If you don’t like Hunter Burn, our list of the best fat burners for men includes 10 other top-quality brands that may help you finally win the battle of the bulge in 2025.
Best Fat Burners for Men in 2025
- Hunter Burn – Best fat burner for men overall
- PhenGold – Best for hormone support
- PrimeShred – Best for high-energy workouts
- Capsiplex BURN – Best for improved metabolism
- PhenQ – Best for multiple weight loss benefits
- Instant Knockout Cut – Best for advanced users
- PrimeGENIX CalmLean – Best stim-free formula
- Burn Lab Pro – Best for muscle recovery
- SculptNation Burn Evolved 2.0 – Best herbal fat burner
- SculptNation Burn PM – Best for men with sleep issues
- SculptNation Turmeric Black – Best turmeric-based fat burner
Do Fat Burners Really Work?
Yes, but it always depends on how accountable you are regarding your weight loss journey. Relying on fat burners won’t help you get over your weight loss hump. You have to exert the extra effort to restrict your calories and exercise daily, even if it’s just walking around your neighborhood.
Detailed Reviews of the Best Fat Burners for Men in 2025
Let’s find out what each supplement has to offer from ingredients to pricing.
1. Hunter Burn – Best Fat Burner for Men Overall
Pros
- Low stimulant formula
- Free e-books and workout programs with bulk orders
- Includes 6 high-dosed ingredients
- Manufactured to strict cGMP and FDA guidelines
- No artificial colors and flavors
Cons
- Too many capsules needed
What To Expect From Hunter Burn
Hunter Burn offers an all-around solution for weight loss. It includes natural ingredients proven to help reduce cravings, boost energy levels, and burn fat.
Dosage
- 6 capsules daily
Pricing
- 1 Month: $90
- 2 Months: $180
- 4 Months: $270
User Reviews
While Hunter Burn’s official website boasts exclusively positive reviews, independent platforms like Trustpilot lack direct product reviews. However, Trustpilot does feature the manufacturer, Roar Ambition.
One reviewer, Robert Creighton, shared a positive experience using Hunter Burn with another fat burner from the manufacturer, citing great results and friendly customer service [1].
Conversely, Francis G expressed dissatisfaction with the company’s customer service, particularly regarding issues with damaged or missing shipments [2].
>>Buy 3 Hunter Burn bottles and get 1 free
2. PhenGold – Best for Hormone Support
Pros
- 100-day money-back guarantee
- Subscribers get at least 20% discount with freebies
- 24/7 customer support
- Vegan and vegetarian-friendly
Cons
- Not suitable for caffeine-intolerant users
What To Expect From PhenGold
PhenGold is your go-to for a thermogenic that stimulates those fat-burning hormones. It packs caffeine, green tea, and green coffee, so a little heads up if you’re jittery about stimulants.
Dosage
- Take 3 capsules 20 minutes before breakfast
- Ideally, take them before your workout
Pricing
- 1 Month: $59.99
- Subscribe & Save:
- 1st order: 20% off
- 2nd order: 30% off
- 3rd order: 40% off on all recurring orders
User Reviews
While one Amazon reviewer reported positive results after following the product’s directions, another expressed disappointment, stating that PhenGold “didn’t help much” and wasn’t worth the cost [3] [4].
>>Learn more about PhenGold here
3. PrimeShred – Best for Intense Workouts
Pros
- Appropriate for vegans and vegetarians
- 100-day refund policy
- Subscribers can save up to 40%
- No GMO ingredients
Cons
- Might be overstimulating for some users
What To Expect From PrimeShred
Need a lift? PrimeShred powers up your workouts with a triple shot of caffeine from green tea, coffee, and straight-up caffeine anhydrous. Just make sure you monitor your caffeine intake, and you’ll be good to go.
Dosage
- Take 3 capsules with water about 20 minutes before breakfast
- Follow this on both workout days and rest days
Pricing
- 1 Month: $59.99
- Subscribe & Save:
- 1st order: 20% off
- 2nd order: 30% off
- 3rd order: 40% off on all recurring orders
User Reviews
On Amazon, one customer, RT, noted a slight decrease in appetite and increased energy and focus [5]. However, John cited a strong, unpleasant odor reminiscent of pepper, sawdust, and questionable ingredients as a major drawback [6].
4. Capsiplex BURN – Best for Improved Metabolism
Pros
- 60-day refund policy
- More significant savings and free shipping on bulk packages
- Free of gluten, dairy, and soy
- Includes essential vitamins and minerals
Cons
- May cause stomach problems
What To Expect From Capsiplex Burn
Capsiplex BURN is a stellar pick to kick your metabolism into high gear. With potent ingredients like capsimax and innoslim, it’s all about melting fat faster.
Dosage
- Take 1 serving (3 capsules) 30 minutes before your workout
- Take it on an empty stomach for quick absorption
Pricing
- 1 Month: $64.99
- 3 Months: $129.99
- 5 Months: $194.99
User Reviews
For unbiased reviews of Capsiplex Burn, it’s best to check third-party platforms or ask friends of gym buddies who may have used it.
>>Learn more about Capsiplex Burn on the official website
5. PhenQ – Best for Multiple Weight Loss Benefits
Pros
- Recommended by 507 physicians on FrontronMD
- 60-day satisfaction guarantee
- Get 15% off when you subscribe
- Free meal shake with bulk orders
Cons
- Free shipping only when you buy in bulk
What To Expect From PhenQ
PhenQ tops the charts in the list of well-rounded products. It is one of the best fat loss supplements for men because it attacks fat on multiple fronts. Just 2 pills a day—that’s all it takes.
Dosage
- 1 tablet with breakfast
- 1 tablet with lunch
- Avoid taking PhenQ after 3 pm due to caffeine content
Pricing
- 1 Month: $69.99
- 3 Months: $139.99
- 5 Months: $209.99
User Reviews
Misty Gischus praised PhenQ in her Trustpilot review for noticeable results within a week, including reduced bloating, shrinkage in her legs and stomach, and decreased appetite [7].
However, Tracie Tooker found the product ineffective in curbing her appetite and reported minimal energy boosts, deeming it overpriced [8].
6. Instant Knockout Cut – Best for Advanced Users
Pros
- Same-day shipping if you order before 2 pm
- Capsules are made from vegetable cellulose
- Subscribe and save 10%
Cons
- Might be too stimulating for beginners
What To Expect From Instant Knockout Cut
Instant Knockout Cut is definitely not for newbies. It’s one of the best fat-burning supplements for men who are seasoned gym rats looking to maximize their sessions. If you’re new to supplements, handle this with care.
Dosage
- 1 capsule with water 4 times a day
- The first dose right after waking up
- The second dose between breakfast and lunch
- The third dose an hour after lunch
- The fourth dose an hour before dinner
- Ensure the last dose is at least 5 hours before bedtime to avoid sleep disruptions
Pricing
- 1 Month: $65
- 2 Months: $130
- 4 Months: $195
User Reviews
Instant Knockout reviews on Amazon include Craig E.’s testimony of losing 16 pounds in a month with a balanced diet and regular exercise [9]. Tim Gibson also reported that he had a long-term positive experience with the product despite a recent issue with a missing package requiring a reorder [10].
>>Explore the benefits of Instant Knockout Cut here
7. PrimeGENIX CalmLean – Best Stim-Free Formula
Pros
- Contains zero stimulants
- 67-day money-back guarantee
- Clean, simple formula
Cons
- Not as stimulating as some supplements
What To Expect From PrimeGENIX CalmLean
PrimeGENIX CalmLean is your go-to fat burner to slim down without the jitters. Yet, for those who crave more energy from your weight loss formula, something with a kick might be more up their alley since CalmLean avoids stimulants.
Dosage
- Take 2 capsules with water
Pricing
- 1 Month: $59
- 3 Months: $169
- 6 Months: $319
User Reviews
Shane, a recreational athlete, gave CalmLean 4 stars on Amazon. After a week’s use, he noted no adverse side effects, felt more energetic, and appreciated the caffeine-free formula. He found the ingredients legitimate and the effects subtle [11].
In contrast, Natacha L reported no visible results after 2 weeks of use by her husband, deeming the product too expensive for continued use beyond a month [12].
>>Learn more about PrimeGENIX CalmLean on the official page
8. Burn Lab Pro – Best for Muscle Recovery
Pros
- Vegan-friendly, prebiotic-infused capsules
- Caffeine free
- Clean, NutriGenesis ingredients
Cons
- Relatively short 30-day guarantee period
What To Expect From Burn Lab Pro
Burn Lab Pro could be right for you if you’re after the best fat burners for muscle recovery and getting you gym-ready quicker. Just remember, it doesn’t have any stimulants.
Dosage
- 2-4 capsules 30 minutes before your workout
Pricing
- 1 Month: $29.50
User Reviews
Burn Lab Pro’s official website lacks user reviews and is not available on Amazon. Furthermore, neither the product nor its manufacturer has a profile on Trustpilot. For potentially unbiased customer perspectives, explore discussions on platforms like Reddit.
9. SculptNation Burn Evolved 2.0 – Best Herbal Fat Burner
Pros
- 100% lifetime money-back guarantee
- All ingredients are standardized herbal extracts
- Comes in vegetarian capsules
Cons
- No essential vitamins and minerals
What To Expect From SculptNation Burn Evolved 2.0
Burn Evolved 2.0 includes standardized herbal extracts for maximum efficacy, purity, and safety. Expect weight loss benefits like reduced cravings, increased energy levels, and optimal fat burning with little to no side effects.
Dosage
- 2 capsules daily
Pricing
- 1 Month: $49
- 3 Months: $132
- 6 Months: $195
User Reviews
With an average of 4 out of 5 stars from 2,283 ratings, Burn Evolved 2.0 is among the best fat burners for men on Amazon. One customer reports positive results, noting increased, jitter-free energy throughout the day [13]. However, a Trustpilot reviewer expresses disappointment, citing excessive sweating and heat without weight loss [14].
>>Buy SculptNation Burn Evolved 2.0 here
10. SculptNation Burn PM – Best for Men With Sleep Issues
Pros
- Gluten-free
- Lifetime refund policy
- Stimulant free
Cons
- Not a comprehensive fat-burning formula
What To Expect From SculptNation Burn PM
SculptNation Burn PM is designed to optimize your sleep and enhance fat-burning while you rest. By promoting deeper, more restful sleep, thanks to ingredients like melatonin, the supplement may help regulate cortisol levels. You might also notice a reduction in late-night cravings and a boost to your resting metabolism, further supporting your weight loss goals.
Dosage
- 2 capsules daily
Pricing
- 1 Month: $49
- 3 Months: $132
- 6 Months: $195
User Reviews
Two reviewers on Amazon offered differing opinions about Burn PM. Grace Etsuko Lee gave a 5-star rating, citing improved sleep and a 2-pound weight loss after using the product at night [15].
Meanwhile, Kerri, who had used the product for months with success in falling and staying asleep, gave a 3-star rating due to a significant price increase, adding that she could find comparable, less expensive alternatives [16].
>>Learn more about SculptNation Burn PM here
11. SculptNation Turmeric Black – Best Turmeric-Based Fat Burner
Pros
- Simple turmeric-based formulation
- AutoRefill option offers best value
- Manufactured in an FDA-registered facility
Cons
- Not enough fat-burning ingredients
What To Expect From SculptNation Turmeric Black
SculptNation Turmeric Black combines turmeric and black pepper to help you increase thermogenesis (calorie burning). The added BioPerine (black pepper extract) enhances curcumin absorption, potentially reducing inflammation and improving fat oxidation.
Dosage
- 2 capsules daily with a meal
Pricing
- 1 Month: $49
- 3 Months: $132
- 6 Months: $195
User Reviews
Roseline praised the supplement on Amazon for its ease of use and noticeable pain relief, particularly in their knees, despite acknowledging the need for weight loss [17].
Conversely, another user reported severe illness after taking the supplement, even at different dosages and times, prompting them to switch brands. However, they had positive experiences with other supplements from the same manufacturer, such as Burn Evolved and Burn PM [18].
>>Get Turmeric Black from the official website
Benefits of Fat Burners
Fat-burning supplements aim to boost metabolism, increase energy levels, and help the body utilize fat as fuel. Some ingredients, like caffeine, may enhance metabolism and influence blood sugar levels. Meanwhile, others might suppress appetite or increase fat oxidation during exercise, potentially impacting body mass index.
Always check the ingredient list and consult a professional before starting any new supplement, especially if you’re considering the best fat burners for men over 40. This is because individual needs and sensitivities can vary with age.
>>Buy 3 Hunter Burn bottles and get 1 free
Common Ingredients in the Best Fat Burners for Men
Multi-ingredient fat burners often combine several substances to boost metabolism, suppress appetite, or increase fat breakdown. Here are some of the most common ingredients to expect and the science to back their efficacy:
- L-Carnitine: A meta-analysis of rigorous randomized controlled trials indicated that a daily dose of 2000 mg of L-carnitine may lead to small reductions in body weight, BMI, and fat mass, particularly in overweight or obese adults [19].
- Capsimax: Research suggests that Capsimax supplementation may increase resting energy expenditure in men, potentially offering a helpful dietary approach for weight management [20].
- Caffeine: A study demonstrated a dose-response relationship between caffeine and fat oxidation during exercise, finding that at least 3.0 mg/kg of caffeine is needed for a statistically significant effect. Plus, caffeine’s fat-burning effect was more pronounced in sedentary or untrained individuals than in trained athletes [21].
- Glucomannan: A research paper demonstrated that daily doses of 2-4 grams of glucomannan were well-tolerated and could lead to significant weight loss in overweight individuals. This effect was likely due to glucomannan’s ability, as a soluble fiber, to increase feelings of fullness and promote the excretion of calories in the stool [22].
- L-Theanine: A 12-week study in mice found that oral L-theanine supplementation promoted the browning of fat tissue and prevented diet-induced obesity in those on a high-fat diet, possibly by influencing gut bacteria composition [23].
- Green Tea Extract: While some studies suggest green tea extract can enhance fat burning at rest and during physical activity, these findings aren’t universally observed. Evidence leans slightly towards its positive impact on resting fat metabolism, with more consistent results in both short-term and long-term studies [24].
Potential Side Effects of Fat Burners
Since they utilize natural ingredients instead of synthetic chemicals, fat burner supplements may cause moderate adverse effects.
Common side effects of fat burners include:
- Nausea
- Constipation
- Stomach ache
- Bloating
- Headaches
High-caffeine ingredients in these supplements, such as coffee bean extract, guarana, and green tea extract, are associated with the following side effects:
- Jitters
- Headaches
- Restlessness
- Dizziness
- Anxiety
- Increased heart rate
How To Choose the Best Fat Burners for Men in 2025
Choosing the best fat burners for men can be challenging, but understanding key ingredients and their effects can make it easier. Here’s a guide with steps to help you navigate the process but when unsure, you can always consult with your doctor or online communities like r/Supplements or r/askfitness.
Understand the Key Ingredients
Most of the best fat burners for men contain stimulants like caffeine, which boosts energy and helps burn more calories during exercise. Look for products combining caffeine with green tea extract for a synergistic effect. However, be mindful of caffeine intake to avoid sleep disruption, which can counteract your weight loss efforts.
Consider L-Carnitine
If you’re on a plant-based diet, L-carnitine is essential. This amino acid helps transport fat to the mitochondria for burning. It’s effective when used consistently over time. Look for body fat burners that include this ingredient, such as PhenQ, along with ingredients that enhance its absorption and thermogenic properties, like piperine or its premium form, BioPerine. L-carnitine is often found in vegan protein powder blends and whey protein supplements.
Consider Taste and Convenience
Since you’ll be taking your body fat burner regularly, choose a supplement that customers recommend based on taste and easy-to-use capsule or powder form. This ensures consistency and makes it a part of your daily routine.
Dosage and Directions
Follow the recommended dosage and directions on the supplement’s packaging. Overconsumption can lead to unwanted side effects. Products should provide clear instructions for safe use.
Effectiveness and Customer Reviews
Research customer reviews and clinical studies to evaluate the effectiveness of a fat burner. Products that enhance thermogenesis and metabolic rate are generally more effective.
Additional Benefits
Some of the best fat burners for men offer extra benefits, such as lean muscle development, mood enhancement, appetite suppression, and increased energy levels, which can contribute to overall fitness and well-being.
Consider the Potential Side Effects
Even natural products can have side effects. Common ones include headaches, stomach issues, and dizziness. Always conduct thorough research and consult with a healthcare provider if you have any concerns or pre-existing conditions.
>>Buy 3 Hunter Burn bottles and get 1 free
Frequently Asked Questions
This part of our review answers common questions about the best fat burners for men.
What Is the Best Fat Burner for Men?
We think Hunter Burn is the best fat burner for men in 2025. It combines the effects of the best natural appetite suppressants with the potent antioxidants from matcha, a rare ingredient.
What Burns the Most Belly Fat in Men?
What really burns belly fat is a lower caloric intake or a calorie deficit, plus the best fat burner for belly fat you can find. Yes, this means just eating less than the required maintenance calories. The body is built to store fat rather than burn it, so what better way to lose weight than not have it in the first place? Natural appetite suppressant ingredients like chromium can help you out, and they are found in Capsiplex BURN, the best belly fat burner for men.
How Quickly Do the Best Fat Burning Pills for Men Take to Work?
The best fat-burning pills take effect soon after you start taking them, but most customers say they have experienced weight loss in just 2-3 weeks.
When Should I Take a Fat Burner?
Timing matters with fat burners. Ideally, take them 30-40 minutes before breakfast or a workout to maximize their effects. Morning intake can help regulate appetite throughout the day. Avoid taking them late in the day to prevent sleep disturbances, especially if they contain caffeine.
Do Fat Burners Cause Baldness?
The best fat burners do not induce baldness. However, suppressing your appetite, making healthy lifestyle changes, and limiting your calorie intake may prevent your body from gaining the nutrients it needs for proper hair growth.
Conclusion on the Best Fat Burners for Men
Choosing the right fat burner can significantly impact your weight loss journey. Hunter Burn, with its matcha green tea and white kidney bean extract, helps with appetite suppression and fat burning, making it a solid choice for men seeking effective weight loss. All this for just $3.00 per serving.
However, results are not guaranteed. Combining the best fat burners for men with a foundation of healthy eating and regular exercise maximizes effectiveness. Always consult a doctor before starting any new supplement.
>>Buy 3 Hunter Burn bottles and get 1 free
References
- “Robert Creighton Gave Roar Ambition 5 Stars. Check out the Full Review.” Trustpilot, https://www.trustpilot.com/reviews/5fca5d7c5e693f060477fb0d. Accessed 14 Feb. 2025.
- “Francis G Gave Roar Ambition 1 Star. Check out the Full Review.” Trustpilot, https://www.trustpilot.com/reviews/5ff545d4755dc1032c0d2ee4. Accessed 14 Feb. 2025.
- “Check out This Amazon Review of PhenGold – Natural Thermogenic Detox Cleanse Pills & Energy Supplement with Green Tea, Caffeine & Gut Health Support for Women – Boost Metabolism, Debloating & Appetite Control – 90 Capsules.” Amazon.Com, https://www.amazon.com/gp/aw/review/B0BSV68KTP/R1MZDJB375TZW. Accessed 14 Feb. 2025.
- “Check out This Amazon Review of PhenGold – Natural Thermogenic Detox Cleanse Pills & Energy Supplement with Green Tea, Caffeine & Gut Health Support for Women – Boost Metabolism, Debloating & Appetite Control – 90 Capsules.” Amazon.Com, https://www.amazon.com/gp/aw/review/B0BSV68KTP/R2IZZJNCDFCHYM. Accessed 14 Feb. 2025.
- “Check out This Amazon Review of PrimeShred Thermogenic Appetite Suppressant Pills for Men, Triple Action Weight Loss Supplement with Caffeine, Energy Booster for Workouts (90 Capsules).” Amazon.Com, https://www.amazon.com/gp/aw/review/B0BX3Q3MTM/R1HKWA34WJLLCP. Accessed 14 Feb. 2025.
- “Check out This Amazon Review of PrimeShred Thermogenic Appetite Suppressant Pills for Men, Triple Action Weight Loss Supplement with Caffeine, Energy Booster for Workouts (90 Capsules).” Amazon.Com, https://www.amazon.com/gp/aw/review/B0BX3Q3MTM/RZWQMQ3UORD84. Accessed 14 Feb. 2025.
- “Misty Gischus Gave PhenQ 5 Stars. Check out the Full Review.” Trustpilot, https://www.trustpilot.com/reviews/67109d6c0ba2783119b53581. Accessed 14 Feb. 2025.
- “Tracie Tooker Gave PhenQ 2 Stars. Check out the Full Review.” Trustpilot, https://www.trustpilot.com/reviews/66e4abff88d99d3a4b6ae730. Accessed 14 Feb. 2025.
- “Check out This Amazon Review of Roar Ambition Instant Knockout Fat Burner for Men & Women – All Natural Ingredients with Glucomannan, Green Tea Extract, Cayenne Pepper Seeds and More.” Amazon.Com, https://www.amazon.com/gp/aw/review/B0916798ND/R85XEFXG90Z8T. Accessed 14 Feb. 2025.
- “Check out This Amazon Review of Roar Ambition Instant Knockout Fat Burner for Men & Women – All Natural Ingredients with Glucomannan, Green Tea Extract, Cayenne Pepper Seeds and More.” Amazon.Com, https://www.amazon.com/gp/aw/review/B0916798ND/R19SFL189LMBQ7. Accessed 14 Feb. 2025.
- “Check out This Amazon Review of PrimeGENIX CalmLean Stimulant-Free Fat Burner.” Amazon.Com, https://www.amazon.com/gp/aw/review/B0BT16JVZ2/R2DYL3JQP6A5GL. Accessed 14 Feb. 2025.
- “Check out This Amazon Review of PrimeGENIX CalmLean Stimulant-Free Fat Burner.” Amazon.Com, https://www.amazon.com/gp/aw/review/B0BT16JVZ2/R2NZ1T7LRUADAT. Accessed 14 Feb. 2025.
- “Check out This Amazon Review of Sculpt Nation by V Shred Burn Thermogenic Fat Burner for Men & Women – Daytime Fat Burner Metabolism Booster – Premium Capsimax Cayenne Pepper, Chromax, Patented Ingredients – 60 Natural Veggie Pills.” Amazon.Com, https://www.amazon.com/gp/aw/review/B0CC39G8G1/RUZLTAUM6V45X. Accessed 14 Feb. 2025.
- “Tina Pich Gave Sculptnation 2 Stars. Check out the Full Review.” Trustpilot, https://www.trustpilot.com/reviews/674926d159dbd7b47e7ea10f. Accessed 14 Feb. 2025.
- “Check out This Amazon Review of Sculpt Nation by V Shred Burn PM – Night Time Fat Burner – Appetite Suppressant and Weight Loss Support – Raspberry Ketones, Green Tea Extract, Melatonin – 60 Gluten Free Capsules.” Amazon.Com, https://www.amazon.com/gp/aw/review/B0CC35GKQ3/R3SM67S1MRFNQK. Accessed 14 Feb. 2025.
- “Check out This Amazon Review of Sculpt Nation by V Shred Burn PM – Night Time Fat Burner – Appetite Suppressant and Weight Loss Support – Raspberry Ketones, Green Tea Extract, Melatonin – 60 Gluten Free Capsules.” Amazon.Com, https://www.amazon.com/gp/aw/review/B0CC35GKQ3/RW5GUWOOVDHLS. Accessed 14 Feb. 2025.
- “Check out This Amazon Review of Sculpt Nation by V Shred Powerful Turmeric Supplement – Turmeric Curcumin with Black Pepper & Patented Ingredients for Joint Health – 30-Day Supply.” Amazon.Com, https://www.amazon.com/gp/aw/review/B0CCWXMYY3/R229BNQR69FFP1. Accessed 14 Feb. 2025.
- “Check out This Amazon Review of Sculpt Nation by V Shred Powerful Turmeric Supplement – Turmeric Curcumin with Black Pepper & Patented Ingredients for Joint Health – 30-Day Supply.” Amazon.Com, https://www.amazon.com/gp/aw/review/B0CCWXMYY3/R2OBTNMLW4H0EB. Accessed 14 Feb. 2025.
- Talenezhad, Nasir, et al. “Effects of L-Carnitine Supplementation on Weight Loss and Body Composition: A Systematic Review and Meta-Analysis of 37 Randomized Controlled Clinical Trials with Dose-Response Analysis.” Clinical Nutrition ESPEN, vol. 37, 2020, pp. 9–23, doi:10.1016/j.clnesp.2020.03.008.
- Morde, Abhijeet, et al. “Capsimax Increases Resting Energy Expenditure in Males under Fasting State: A Randomized, Double-Blind, Placebo Controlled, Cross-over Study.” Current Developments in Nutrition, vol. 5, no. 5140514, 2021, p. 514, doi:10.1093/cdn/nzab041_029.
- Collado-Mateo, Daniel, et al. “Effect of Acute Caffeine Intake on the Fat Oxidation Rate during Exercise: A Systematic Review and Meta-Analysis.” Nutrients, vol. 12, no. 12, 2020, p. 3603, doi:10.3390/nu12123603.
- Keithley, Joyce, and Barbara Swanson. “Glucomannan and Obesity: A Critical Review.” Alternative Therapies in Health and Medicine, vol. 11, no. 6, 2005, pp. 30–34, https://pubmed.ncbi.nlm.nih.gov/16320857/.
- He, Jia, et al. “Oral L-Theanine Administration Promotes Fat Browning and Prevents Obesity in Mice Fed High-Fat Diet Associated with the Modulation of Gut Microbiota.” Journal of Functional Foods, vol. 81, no. 104476, 2021, p. 104476, doi:10.1016/j.jff.2021.104476.
- Hodgson, Adrian B., et al. “The Effect of Green Tea Extract on Fat Oxidation at Rest and during Exercise: Evidence of Efficacy and Proposed Mechanisms.” Advances in Nutrition (Bethesda, Md.), vol. 4, no. 2, 2013, pp. 129–140, doi:10.3945/an.112.003269.