All Homeopathic pharmacies or Homeopathic doctors sells them.
Silica 200 - 200 is the potency of it (thats how the homeopathys
way of speaking).
Same goes for Cal Phos 200.
As for the Sugar balls, they are only 1.5 mili meters in diameter, super
small.
I paid S$30 for each small bottle of a 100 Sugar balls. The bottle is only
2 inches in height. And I bring them with me in my small purse. Never
Leave them in the sun.
The homeopathic doctor dripped about 15 drips of Silica 200 in a bottle
of 100 Sugar balls (to last me a month).
Will try to upload a pic on my profile for u to see ;))