APF is a mixture of several adaptogens that many members have found helps their horse get over the veil that often comes with introducing pergolide, or increasing it. www.auburnlabs.com
Since your mare has been on pergolide for quite some time, I would suspect that just slowly introducing the increase would be fine.
I keep it on hand for when Pap gets his vax, or we trailer...anything that's a bit of a stress.
