Designer Supplements has products that work as an example. Perhaps a NHA stack. There are others just visit a few manf. sites and see what is available. ECA and ECY are OTC in most places still. I go with your diet being the most important. Its a matter of supplying the fuel your body needs to perform and prevent muscle loss. I am sure some will suggest cycles but I just feel it is not needed really. The body draws on itself when no other source is available. Same reason you limit the time as the stores only last so long, then it begins to scavenge elsewhere. Monitor as you go and adjust cardio and or cals. I tend to think although it is NOT from experience that some orals tht would benefit your goal aren't worth it the potential effect to your cardio performance or endurance. I am sure this is of the upmost importance to you.