Cuttlebone/Egg shells for calcium?

[Brucey]

Hey all,

I've recently come across some articles and videos detailing how to prepare cuttlebone and eggs shells are a source of calcium for Leos/reptiles more generally. My question is, how reliable and safe are these methods of obtaining calcium? Is one better off just getting calcium (without D3) from a store?

 

[Elizabeth Freer]

i prefer getting NOW brand pure calcium from a health foods store or some place like Amazon.

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Pure calcium never expires. Just keep it dry.