So, I've had some 5-HTP for a while, and have read some pretty scary things about long term effects such as heart scaring etc.
and was just really wondering, are any of the 'rumors' true? Is there any scientific fact behind it causing EMS among other things?

The reason I'm cautious is because I've got pretty high blood pressure, and am worried about my heart as it is, so if this can potentially cause heart attacks or something, then I'm out straight away.