Yes|No.
They don't interfere with pacemakers.
They can cause arrythmias, and even cause respiratory arrest.
They're probably more likely to cause such things in people that need pacemakers.
Tasers were tested on four healthy pigs with pacemakers .. All OK.
https://www.ahajournals.org/doi/10.1161/circ.118.suppl_18.S_...
isn't as cut and dried as some might claim.
Aren't tasers certified not to interfere with pacemakers and similar things?