Seratonin Syndrome is caused by an excess release of serotonin. Taking 5-htp supplement with B6 is greatening the risks of this occuring , due to the fact that excess serotonin is being release when rolling in the first place..by taking 5-htp containing B6, you are enabling more serotonin to be realsed , when regular 5-htp without b6 will do the job of rebuilding serotonin levels..the only reason i suggested not taking 5-htp with b6, is because this person Zekefreak may be a frequent roller. considering the fact he rolled twice in 2 days. so we are not talking about someone with normal serotonin levels. which in this case, might not be such a good idea to take 5-htp supplement containing b6. EXCESS RELEASE OF SEROTONIN=SEROTONIN SYNDROME