You're correct Shrek, not that it blocks nutrients but some nutrients are fat soluble and will be eliminated with the fat.
To the OP, simply don't take it. I am not sure what diet or training program you are on at the moment. But I would personally have a few days to a week of overfeeding with good nutritious food. Don't go to shit town with junk food, just eat a lot of whole foods and over ur maintenance. Increase leptin levels. Then start cutting calories slowly but also training the main movements and increasing the weight used.