There is also that calcium is difficult for dogs to absorb. You can give them some fruits and vegetables after meals, or take them to bask in the sun, which can help them absorb calcium nutrition and is good for their health.
Generally, calcium is given to dogs for a month, and you will know if there is any improvement by looking at your legs. Pay attention to control the amount of calcium supplement, and don't always give calcium to dogs, otherwise it will cause excessive calcium in dogs.