Puppies over three months of age, It's important to consult with a veterinarian to get personalized advice and ensure that your puppy is receiving the right amount of calcium for its specific needs.

I started it from 3 month , till the time you can give milk calcium from drools which are easy to chew , and give the bone according to the age table mentioned behind the pack

After 4 months recommend , not easily digestible give half bone per 2 days

Drools calcium milk bone