Generic forms of rapamycin, such as sirolimus, cost about $5 per milligram.

“and it's actually not cheap but it's a drug that is off- patent right so this is a drug that was approved by the FDA 25 years ago so generic forms are inexpensive enough that no believe it or not they're not this is the irony of it is is generic so rap immune is the brand drug — that was initially — approved in 1999 and today if you go and buy rapamycin you're going to not buy rapamune you're going to probably buy generic — ceramus or rapamycin and yet it's surprisingly quite expensive now it's not enormously expensive because you're not taking much of it but it's about five bucks a milligram”