Energize Yourself! Combine a Nutritious Diet Regular Exercise and Thermo Slim Tea to Achieve Better Health and Fitness! Fat Burner Formula. Green Tea With Thermogenic Herbs. Balanced Diet Plan Included. Lemon Thermo Slim Tea combines antioxidant-rich Green Tea with heat producing herbs and spices that cause a thermogenic reaction by increasing metabolic activity. In effect the body responds by not allowing excess calories to be stored as fat.