i don't remeber if this was dan duchaine post cycle gain keepers formula but fere it is
clen
proviron
hcg
clomid
novla
if i recall correctly
1.clen 2-4 tabs/day for 2 weeks
2. proviron 50 -100 mg/day for 4 weeks
3.clomid 100 mg for 4 weeks
4. Human Chorionic Gonadotropin (HCG) 5000 2x/week for the first 2 weeks
5. 20 mg novladex for 4 weeks
i used this multiple times after large gaining cycles and it works great