This is an excerpt from the late Dr. Lowe's website:
Propranolol is a beta-blocker, and it’s a highly effective antidote to thyroid hormone. It’s so effective that many patients who are overstimulated by thyroid hormone (as in Graves' disease) use it. Propranolol relieves these patients’ overstimulation by indirectly blocking the cellular effects of thyroid hormone.
I have been on beta-blockers (Tenormin = Atenolol) for the past four years, and currently take 50 mg daily. Nobody has ever mentioned the possible interaction between beta-blockers and thyroid hormone...does anyone know if this applies to all beta-blockers, or to Propranolol specifically?