Jguns over at CEM is promoting the use of Ketotifen for PCT along with the standard SERM's like nolva. Here's the thread
He lists a couple of studies that show a few things.
1- Reduces TNF A (catabolic)
2- TNF A reduces free test and IGF-1
Maybe a more chemically correct mind would chime in on this, as I can't tell if he's pimping it's use because, surprise, HE SELLS IT. Or, if it really does have an advantageous role in PCT. Another way to pose the question would be: are the benefits it would show worth the cost of the Ketotifen?