Although I am usually not inclined to posit speculations on why a particular drug does or doesn't do something, in this case I will. Im guessing that the higher doses of Anadrol cause enough appetite suppression (at least anecdotally) to make eating rather difficult. It can also increase insulin resistance and glucose intolerance (5). This has the effect of making macronutrient absorption more inefficient, and could also be a factor in reducing gains when the dosage goes over 100mgs/day. Unfortunately, Anadrol also has a reasonably profound effect on your body's natural hormonal system, on par with most other oral steroids , but not as bad as most injectables, and its certainly not as harsh on your lipid profile as many anabolics are
The best course of action may be to utilize enough non-hormone steroids, and during the last phase of the cycle, using fast acting substances like testosterone propionate or trenbolone. Oral dianabol may also be effective as it can clear away quickly from the body. Also, during the whole cycle, efforts should be made to keep the levels of estrogen down. This can be done with the help of compounds like formestane and arimidex . Taking non-aromatizable steroids like winstrol and trenbolone is also a good way to keep estrogen levels under control.