I'm curious if there is any scientific investigation into the active ingredient in chamomile tea, and whether there is any research into chemically similar supplements. Asking out of interest in chemistry, not for personal medical advice.
I've tried reading this NCBI article which suggests that the active ingredient is apigenin, and this NCBI article that discusses the chemistry of apigenin, both interesting but slightly over my head. Then I looked into chemicals which were said to have a similar mechanism to apigenin, and the chemical Fisetin came up several times, though my chemistry is not strong enough to understand what neurotransmitters are involved and whether they might have the same activity site. I've also seen articles suggesting all flavanoids have a similar behavior, in which case I am curious if that is true and what the common flavanoids are.