I had previously had 4 similarly dramatic episodes of afib and tachycardia since 2015, spread out by 18 months or so. I delayed Tymlos because of this but took the risk due to recent fractures (pain!). I don't think anyone with no previous arrhythmias would end up in the hospital like me. I never even got on a daily 1/2 dose and had only been trying to get on it for 3 weeks or so, skipping days, doing 1/4 dose then 1/2 alternate days. My episode happened after doing 1/2 dose two consecutive days. I seriously doubt this will affect anyone else unless they also have afib and tach.