Think yours are low?
This is about the nervous system. What makes you think your "levels" are low? Neurotransmitters don't HAVE "levels".
They don't just float around or circulate in blood. They're made in the terminal boutons of neurons, released into the synaptic cleft, & immediately either recycled & replaced or taken back up. Neurochemistry isn't just a New Age fad. REAL knowledge is power. Go arm yourself.