Saint bernard puppy diagnosed with Rickets

Question
Hello!
    Rosco-- is going to be 6 months old soon.He was an extremely weak puppy.He was nothing but bones when we got him about 4 months back.
Now his hind legs seem bent and he is not walking much inside the house .He does like to go for walks though.We have been giving him calcium and multivitamins throughout.
Can you please help!---is it something which can be cured? what should we do to help him?
I will be very grateful if you could answer.
Thank you,
Aparna

Answer
If your puppy is on puppy food, get it off immediately! A giant breed puppy should not eat anything higher than a product with 23% protein, and lower fat levels. All your supplementation is causing him to grow faster than he should.

http://www.eaglepack.com/Pages/EP_PetHealth.html#lgnt
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