That's correct.
In people with heart problems, it can be an issue but in healthy people, it's not known to cause anything like that.
In terms of palpitations, anxiety or just stress (to any person) can cause that. If palpitations are not a listed side effect in either the Consumer or Healthcare Pro sections on Drugs.com, it's not known as a possible side effect and with the millions who have taken it, it would be by now.