This is hands down my favorite weight management supplement. Unlike the thermogenic product offered by RSP this one is stimulant free. The appetite suppressant helps with curbing food cravings. This product is so easy to take and there's no side effects other than healthy weigh management. I can take the Quadra Lean Thermogenic in the morning, and then take the stimulant free at night. RSP is definitely my go to for weight management supplements.