Hello,
I can answer this from experience, not as a doctor. My heart rate got the slowest when I was put on steriods. From research I had done at the time, I found that hypothyroid patients should not be on steroids due to drug interactions. I get the feeling we are always dealing with either drug or substance interactions when we have thyroid problems. Our systems tend to run too fast or too slow at times and it is important to know what other substances might be contributing to those symptoms.
My question would be:
Are you presently taking any other drugs that could have the side effect of slowing your symptom down? Side effects of other drugs (in my life) were commonly blamed on my thyroid condition but in reality, were remedied when I stopped the offender. Just a thought.
Also, check your body temperature. If your body temperature is also low, work on reducing foods that are known to be thyroid suppressors like broccoli and soy. Eat higher energy foods like coconut oil which will help speed your heart rate without drugs.
This is a detective game. Each one of us are at a certain place due to contributors we may have to investigate on our own. I know that no one could have figured out what was going to help me better than myself. I knew I was drinking this, eating that, reacting this way or that, etc. Take some time to keep a log of what you are putting into your body (and your mind) and be a detective. There could be some significant help in this process.
Having said all this, there also could be a need to change your dose of medication. If your heart rate is slow and you are not on natural thyroid supplements which include T3, you may not be converting the straight T4 which is all you are getting with Synthroid and the like. This alone could really help your energy and heart rate.
I hope some of this helps. Let us know what you find out. And, remember as you play detective, none of us our perfect so don't be embarrassed to say what you've found. I used to have a soda in the afternoon and wondered why I was having a hard time falling asleep. I cut the caffeine out and "viola", I was able to relax and fall asleep at night (this was years ago but I had to check my diet for clues).
Mo
