Repashy for calcium?

[Folly's place]

That's what I saw on their website too. It seems to me that if he wants to add serious calcium to this one hen, injectable would be best. Fast and effective. If her shell gland isn't working right, it's likely not an issue with too little Ca, but it's easy for us to do the 'Google diagnosis', so never mind this guess on my part.
Mary

 

[aart]

...and just giving calcium often does not do the trick for thin shells,
they need other nutrients to process, absorb, and apply the calcium.
Why Vit D3 is given with calcium supplements,
but there are other aspects also that I am not fluent with.

...and sometimes nothing works on a wonky shell gland.