Hi, my doc put me on Levothyroxine 75 mcg 1 1/2 months ago and I have had 2 episodes of A-Fib lasting at least 8 hrs. each time since then. Can this drug cause,or contribute to this happening? T.K.
27 Apr 2012
I realize this answer is very, very late but may help someone in future.
Yes, levothyroxine can cause arrhythmias, palpitations. I hope the atrial fibrillaton episodes have resolved for you.
Cardiovascular side effects include: palpitations, tachycardia, arrhythmias, increased pulse and blood pressure, heart failure, angina, myocardial infarction, cardiac arrest.
- Levothyroxine Information for Consumers
- Levothyroxine Information for Healthcare Professionals (includes dosage details)
- Side Effects of Levothyroxine (detailed)
Search for questions
Still looking for answers? Try searching for what you seek or ask your own question.
I got Graves disease in 2002 and had to take the radioactive iodine pill to destroy my thyroid gland. It's taken this long to get to125mcg of ...
1 answer • 7 Mar 2010
I was wondering if I could take the anxiety meds while taking my Levothyroxine, which is for Hypothyroidism.
1 answer • 9 Apr 2010
i was put on 0.05 mg from my doctor for hypothyroidism and my boyfriend is on 50mcg for the same thing and we where wondering which is the higher ...
1 answer • 4 Jun 2010
... upcoming thyroid scan. Is this wise?
2 answers • 8 Feb 2013
... months and is constantly upping my dose a little at a time (currently to 175 mcg of levothyroxine) and i'm still at a high # in bloodwork. ...
2 answers • 7 Aug 2013