Mark,

I just read your other thread, and I think you've answered your own question: You took a Lyc. 30C and had an aggravation. You then took a Lyc. 200 and had an even worse aggravation. These remedies get stronger as they go up. That doesn't mean that you won't find the odd exception from time to time, but as a guideline, it would have been a reasonable, safe assumption that if a 30C caused an aggravation, it would not be wise to take a higher potency of the same remedy.

Snoopy