Re: Effect of Beta Blocker on Thyroid Med
The FDA only notes the following about Atenol given thyroid medication:
Thyrotoxicosis - May mask clinical signs (eg, tachycardia) of developing or continuing hyperthyroidism. Abrupt withdrawal may exacerbate symptoms of hyperthyroidism, including thyroid storm.
Also only propranolol has been studied in depth for synthroid interaction. The findings were that patients treated with large doses of propranolol (> 160 mg/day), T3 and T4 levels can change SLIGHTLY. TSH levels in these same patients remain normal. Patients that are clinically euthyroid stay that way. They do point out that actions of particular beta-adrenergic antagonists may be impaired when the hypothyroid patient is converted to the euthyroid state (Normal thyroid functioning state).
Basically they are saying at high levels you may see a change in your levels. Also if you are hypoT and not treated to a euthyroid state, then the effectiveness or function of the beta-B to treat your issues will fluxuate and be affected. So you can take it.. but if you are not optimized for your hypoT.. expect fluxes in the effectiveness of the beta-blocker. My cardiologist requires me to take my BP 2-3 times a day. I adjust my pindolol according to the results.
If we learn by our mistakes, I am working on one hell of an education.