Hello. please help me choose between gaba or tryptophan. my main concern is the possibility side effect of palpitation since im super sensitive for sleeping i need something to make me drowsy/knock me off not just for relaxing cause when i meditate i dont feel drowsy im only doozing/floating off a little while but then still awake also i need a deep sleep. some downsides i consider among those 2 are: tryptophan: i read some people experience palpitation from tryptophan. its reputation for being linked to bad side effect such as ems, etc and/or contamination. it effects serotonin which some people are sensitive too. gaba: I read it doesnt cross blood brain barrier. Though there are other type which supposed to do so such as pharmagaba. seems it only helps to relax but not to feel drowsy so i supposed tryptophan is stronger? i already have valerian, taurine, chamomile which supposed to have similiar effect with gaba too? i need inputs which one seems better for me and if you have experience palpitation from gaba/tryptophan? Also about gaba that supposed to be able to cross blood brain barrier such as pharmagaba is it really great? id be greatly appreciate your reply. thank you.