I am not using the Zoomed stuff though, i am using Rep-Cal brand, which does have the shells, their website says

"Our ingredients are highly digested, and our extrusion (cooking) process ensures absorption of more nutrients."

i just want to know if its worth spending the money to go to the zoomed stuff thats not made from oyster, cause this repcal stuff is two part mix (calc/vit) so i would be throwing away two containers.