Beta blockers work with other meds

Dear Dr. Roach: I am 80 years old. I was diagnosed with hyperthyroidism. I am taking methimazole 10 milligrams, two tabs daily.I am also taking metoprolol. I read on my computer that beta blockers interfere with the absorption of methimazole. Should I take a different medication? — M.W.

Hyperthyroidism is when the thyroid gland releases too much hormone into the blood. This may cause many symptoms. Methimazole blocks the synthesis of thyroid hormone, but often beta blockers are also used to treat some symptoms. Beta blockers work quickly.

I was surprised to hear you read beta blockers block absorption of methimazole — nothing in medical literature supports that. It is true that once a person has gone from hyperthyroid to normal thyroid, the body can absorb metoprolol better.

TSH is “thyroid stimulating hormone,” the body’s signal to release thyroid hormone. In people with hyperthyroidism due to a problem with the gland the TSH level is very low.

Dear Dr. Roach: I am 84 years old and in good health. I recently read that most Americans don’t get enough potassium.I started taking a potassium supplement. Wise or not? — C.H.

A large 2012 study examining dietary habits concluded that the vast majority of Americans consume and too little potassium. Increasing potassium uptake almost always lowers blood pressure. I still recommend increasing potassium through diet.

Less meat, less processed foods and of course less salt added to food all will decrease sodium. More fruits and vegetables will increase potassium. This has many other benefits, with the effect of decreasing heart disease and cancer risk.

I don’t recommend a potassium supplement without a specific recommendation from your physician.