Specs Caffeine per serving: 0 mg (stim-free) Serving size: Two capsules Servings per container: 60 Third party testing: Yes Key ingredients: ForsLean, Capsimax, Paradoxine, and green tea extract Best Thermogenic Fat Burners: Jacked Factory Burn XT Jacked Factory Burn XT Our thoughts: We like the combination of caffeine and cayenne pepper for a natural thermogenic fat burn Key ingredients: Acetyl L-Carnitine HCI, Green tea extract, caffeine anhydrous, Capsimax cayenne pepper extract, BioPerine Who its for: Folks who work out in the morning or midday What makes it different: Burn XT was part of a clinical study on its effects, published in 2022 Pros Subscribe and save for 15% off Contains no proprietary blends Acetyl L-Carnitine and green tea extract may offer cognitive support Cons Full dose is four capsules per day, meaning a supply will last only fifteen days May cause jitters or side effects for folks sensitive to higher amounts of caffeine Relatively pricey Jacked Factorys Burn XT is our top pick for the best thermogenic fat burner, thanks to its unique combination of Acetyl L-Carnitine HCL, green tea extract, caffeine anhydrous, Capsimax cayenne pepper extract and BioPerine, all of which work together to potentially help enhance the bodys calorie-burning capability and support fat oxidation

Always discuss genetic findings, test results, symptoms, and treatment decisions with your healthcare provider or an allergist to determine appropriate care for your situation
InjectCos physician-supervised weight loss program in Plano, TX, includes progress tracking, dose adjustments, and ongoing monitoring as your body responds to the medication
WBJ Whole Body Journal Editorial Team Evidence-Based Health Writing Updated June 2026 Evidence reviewed Quick Answer YOUR QUESTION HERE
Koeth RA, Wang Z, Levison BS, Buffa JA, Org E, Sheehy BT, Britt EB, Fu X, Wu Y, Li L, et al