All Slim By Nature Programs involve the use of our targeted detox drops or patches, which work to enhance fat burning for rapid and lasting weight loss, while also supporting healthy detoxification. Therefore, using additional fat burners or pre-workouts will not necessarily create a higher fat burning result due to the nature of our homeopathic formulations. However, we don’t anticipate them to harm your detox results (as long as they are. high-quality formulations with no nasties), so this is a personal choice.