Here is a link to an online hyper-T support goup:
Hyper-T Support Group

The group is a place to discuss any and all treatment options for the hyperthyroid cat including medication (Tapazole and methimazole), surgery, radioactive iodine (I-131), in addition to holistic or homeopathic remedies and natural supplements to complement the above.

Their purpose is to provide information, education, and support to the caretakers of hyperT cats through the sharing of personal experiences among all treatment modalities.