[Ladymom]

You can make your own calcium from egg shells and avoid any contamination. Buy organic eggs and after using the eggs rinse the egg shells thoroughly and put them aside in an open container. When you have gathered enough egg shells, put them in the oven at 350 for 20 minutes. Then when cooled, crush them and put them in a coffee grinder, or a fine grinder, until they are like powder.

EGG SHELLS DOSAGE: once a day

10 to 50 lbs 1/8 tsp.
50 to 75 lbs 1/4 tsp.
75 to 100 lbs 1/2 tsp.
100 lbs + 3/4 tsp.

http://www.canine-epilepsy-guardian-...pplements.html