Doesn't make much sense to suggest or prescribe the sarcode Thyroidinum in an attempt to stimulate the gland without knowing what type of Thyroiditis you're dealing with. At least not in the name of responsible homeopathy. Maybe it's just easier to blame it all on the potency used, but considering the dose was administered 4 months ago I'd be more inclined to look at the symptom complex Carcinosin was intended to cure.

This case really does speak to the issue of compliance between patient and practitioner. If it ain't there, you don't have a case.