@MFAAS rhGH for ameliorating AAS-induced spatial memory changes. Look into the work of Grönbladh on rhGH. He has studied its application in reversing some AAS induced effects on the GABA system in particular.
One reference is: Gronbladh, A., Johansson, J., Nostl, A., Nyberg, F., & Hallberg, M. (2012). GH improves spatial memory and reverses certain anabolic androgenic steroid-induced effects in intact rats. Journal of Endocrinology, 216(1), 31–41. doi:10.1530/joe-12-0315
FYI: Nandrolone is not likely to be particularly harmful, it is just considered a model compound, and frequently associated with AAS polypharmacy by researchers.