Vitamin powder to cats

[BettinaT]

Im using this vitamin powder. And i see there is now two different kinds of source of calcium in. The one is from limestone and the other are from eggshell powder.
What its the best option for cats?

 

[Dr. Jean Hofve]

They're both fine.

 

[Dr. Jeff]

As Dr. Jean says, both are fine to use!

Personally I prefer eggshells depending on their source and that of the limestone.