Calcium deficiency for my german shephard

Question
greetings Mr. Labman
I have german shephard, DOB - 5 jan 2010, weight - 13 kilos, Name - Rex.
2 days ago suddenly he was feeling sick and left his ears lose and he was not playing at all, he was completely inactive and crying all the time. but yesterday he showed up pain in his front feet. he had fever too. Our vet told its b'coz calcium deficiency.
but we are giving half tab of 'Nutrical*CA' daily.
even recently we've started 'SHARKOFERROL pet' syrup.
still this happened to him, can you please tell us what is wrong with Rex?
if its really calcium deficiency tell us best cal food for Rex.

Thanks
Regards  Prasad

Answer
What have you been feeding him?  Most commercial dog foods contain as much or more calcium as a growing large breed puppy needs.  Too much calcium, especially in the wrong ratio to  phosphorus, cam be worse than too little.  

If you haven't been feeding a commercial dog food, I would try to find one and start feeding it.  I know Pedigree is available in India and have good reports about it.  I think Pro Plan is available too and I know for sure it is a good food.  

Since the problem started after the Sharkofferrol, I would discontinue it even if you don't do anything else.  Quite often a product sounds good, but is completely untested and can be harmful.