Non-Thermogenic Fat Burner. Natural-EFX by Formutech Nutrition is a potent formula engineered to help optimize fat metabolism, fat emulsification, fat burning, as well as enhance lean mass. It features key active ingredients such as 7-Keto DHEA, Acetyl L-Carnitine, herbal diuretics, natural energizers, and fat burners. In addition to these proven components, Natural-EFX contains essential nutrients including Vitamin B6, chromium and calcium. Combine Natural-EFX with your exercise and nutrition program and you're sure to see great results.