Can the thyroid medication like thyronorm increase blood pressure?

Dose dependent: An under active thyroid can make the blood pressure low. Increasing the thyroid levels can raise the bp. This is an expected physiologic response. Check your levels if you are concerned.

Possibly: Both too little and too much thyroid hormone can cause high blood pressure. Hypothyroidism is usually associate w/ high diastolic (bottom number) pressures, while excess thyroid hormone can cause high systolic (top number) pressures. Work with your doc to make sure your TSH is in the target range. If BP still high, it needs to be treated.