The math is dead simple.

There are two standard dilutions in homeopathy, X and C. In the former, one
drop of a solution is diluted with nine drops of solvent (i.e. 1 part in 10
parts), and shaken. The latter is a one part in 100 dilution.

The number preceding the X or C is the number of times the dilution was
completed. So, a 30C dilution is 1 drop in 100, thirty times sequentially.
If you know anything about molarity of solutions, statistically, anything
beyond a 12C dilution has little chance of having any active ingredient in
it whatsoever.

To consider your specific question, a 30C preparation has been diluted
one-hundredfold 18 times more than has a 12 C solution. Homeopathy holds
that this enhances the potency of the preparation.

Lar

Mg??? Could not be of the effective constituent. When diluted to 30
deg, the original atom is perhaps some place around Moscow or so at
the time of writing if you are in US. one Mol of stuff contain about
10*21 number of atoms. So, when diluted to 10**(-30), one atom left is
placed somewhere in 10**7 liter water. Quite a lot, eh??

These tablets are also used in all medical experiments. They are
called placebo pills. They contain nothing than the dilution
principle, often chalk. Of course, that work. Believe in a pill always
cure a lot of people, it is just called placebo effects.