If money is an issue and someone needs to take Cat's Claw for an extended period of time, I'd highly recommend buying organic Cat's Claw in bulk from http://www.MountainRoseHerbs.com
I have no affiliation with them except as a happy customer, and have always been happy with the amazing quality and freshness of their herbs & spices.
For 8 bucks a POUND, you can get organic Cat's Claw...of course, shipping has to be paid also.
You can put it in capsules yourself, or make your own tincture with organic grain alcohol or vodka, OR make own infusion with pure water.