While hypothyroidism typically slows the heart, a high heart rate can sometimes happen if thyroid hormone replacement medication is slightly too high, or due to other factors like stress or dehydration. Additionally, Inderal (propranolol) at 10 mg once daily is a very low dose and wears off quickly. I recommend speaking with your doctor to check your thyroid levels and discuss if your propranolol dose needs adjustment.

Taking Inderal (propranolol) will not typically affect your heart ultrasound (echocardiogram). However, because Inderal is a beta-blocker that lowers your heart rate, it can significantly affect your treadmill stress test by preventing your heart rate from reaching the necessary target. Please contact your doctor or the testing facility as soon as possible. They will guide you on whether you need to safely and temporarily pause taking your medication before the stress test. Do not stop taking your medication without their direct advice.

Paxidep (paroxetine), Inderal (propranolol), and Amitop (amitriptyline) are generally considered safe during breastfeeding, as very little passes into breast milk. However, Cabforte (cabergoline) can significantly reduce your milk supply and is not recommended if you wish to continue nursing. Etilaam (etizolam) can cause drowsiness in your baby, so it requires extreme caution and close monitoring. Please discuss these medications with your doctor to find the safest, most comfortable plan for you and your little one.

Sweating, a fast pulse, feeling cold, and low blood pressure can occur due to dehydration, anxiety, infection, or a sudden drop in blood pressure. Rest for a while and drink enough fluids to stay hydrated. If the symptoms continue, worsen, or are associated with dizziness or fainting, seek medical advice immediately. Consult a doctor to check your blood pressure and identify the exact cause of the problem.

It is very important that you do not stop taking Inderal (propranolol) suddenly. Stopping a beta-blocker abruptly can cause your heart rate to spike or your blood pressure to rise quickly. To stop safely, your doctor will guide you through a gradual tapering process, slowly reducing your dose over a few weeks. Please contact your prescribing physician or endocrinologist before making any changes. They will create a personalized schedule to help you transition off this medication safely and comfortably.

Your normal ECG is very positive news. Since propranolol (Inderal) hasn't helped, the next steps should focus on exploring other common causes. Because this happens at bedtime, we should consider a gastrointestinal evaluation for acid reflux, which often mimics chest pressure when lying down. To fully rule out heart-related causes, your doctor might suggest a Holter monitor to track your heart rhythm at home, or an ultrasound of the heart (echocardiogram). Please discuss these options with your physician to find the right path forward.