“Can the Covid vaccine cause heart arrhythmia?”

The mRNA vaccines can on very rare occasions cause a heart inflammation called myocarditis, it is mild, lasts a few days, clears up with a few days of anti-inflammatory medication such as ibuprofen, and leaves no after-effects. Technically there could be an irregular heart rhythm, but this is not considered to be directly due to the vaccines. Many adverse effects which are noted after vaccination are often coincidental and not related to the vaccines. You did not state your age, if there is a history of heart problems and which vaccine you actually received, and if it was after a first or later vaccine dose. These are important issues that need to be resolved to determine if it is safe to get another vaccine dose. Your COVID risk factors are also a big part of the decision-making. COVID-19 disease causes much more serious heart issues in some unlucky people than do any of the vaccines.


Carl Lauter MD, MACP, FAAAAI, FIDSA
Section Head, Section of Allergy and Immunology
Member, Section of Infectious Diseases
Professor, OUWB School of Medicine
William Beaumont Hospital - Royal Oak
3535 West 13 Mile, Suite 605
Royal Oak, Michigan 48073
Mobile 2488912451
Patient Office 2485510495
Fax 2485517268
Carl.lauter@beaumont.edu