Sorry that's happening to you, too!
I wasn't aware that sertraline might impair cognitive abilities....
But no, I'm not messing with recreational drugs.
Short: I was trying to lightly bump up my serotonin:
Long: 5-HTP is "a naturally occurring amino acid and chemical precursor as well as a metabolic intermediate in the biosynthesis of the neurotransmitter serotonin."
EGCg is a green tea extract that acts as an L-Amino Acid Decarboxylase Inhibitor, preventing the 5-HTP from being converted into serotonin before it reaches the brain.
The EGCg inhibits the conversion of 5-HTP into serotonin in the gut where it could cause issues with one's heart valves and digestion.