On your last cycle you could've used 20mgs/day of tamoxifen combined with stanozolol 50mgs/day as an anti-progestogenic to combat potential gyno from the progestogenic effects excacerbated from the deca.
If you're off-cycle right now I suggest 20-40mgs of tamoxifen daily unti gyno dissipates, then taper down to the least efffective dose.
Let me know if your contemplating another cycle and list every constituent and I can go into detail as to how to prevent this adverse effect from occurring again.
B32