I think the op is talking about anything that helps create serotonin whilst taking a serotonin reuptake inhibitor is a bad idea and I agree....

I have seen the results of MDMA + SSRI when I was at a party many many years ago... The seizure that person had was full body ... All their muscles were tense... It was lucky we got them to hospital asap as they almost died (30 minutes to live the doctors said) and even at that point needed to be put in a medically induced coma for days... (I took this person to the hospital and heard the rest from the person's family)