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Specs Caffeine per serving: 270 mg Serving size: Two capsules Servings per container: 30 Third party testing: Yes Key ingredients: Acetyl L-Carnitine HCI, Green tea extract, caffeine anhydrous, Capsimax cayenne pepper extract, BioPerine Best Non-Stim Fat Burner: Legion Phoenix Fat Burner without Stimulants Legion Phoenix Fat Burner without Stimulants Our thoughts: We like the inclusion of 5-HTP in this fat burner for appetite suppression Key ingredients: PurCaf Natural and organic caffeine, green coffee bean extract, Irvingia IGOB-131 seed extract, green tea leaf extract, grains of paradise, 5-HTP Who its for: Women looking for both fat loss and mood support What makes it different: Contains a proprietary blend of African mango seed extract, which has been studied for its weight loss properties Pros Formula is available with or without caffeine Vegetarian-friendly Discounts available if you purchase multiple packs at once Cons Includes proprietary blends More expensive than other fat burners on our list Three capsules per full serving Legions Phoenix Fat Burner is our pick for the best fat burner without stimulants

Diindolylmethane, a naturally occurring compound, induces CYP3A4 and MDR1 gene expression by activating human PXR

2012;38:21 Mazziotti G, Giustina A, Canalis E, Bilezikian JP

Wang X, Wang L, Xiang W