MEXICAN TEA?? 🤔🤔

Question

This is a bit of a random question, but I was wondering if anyone had any answers.. my husband is Mexican and his mom makes this tea for him periodically that’s called Brickellia Grandiflora also called Prodigiosa or Hamula. 
He claims “it’s for the nerves” aka he feels better after drinking it when he’s suuupper stressed out. My confusion is here: I’ve researched the tea a bit, but I have found ZERO info about this particular tea helping with stress and/or anxiety, or even just having calming effects whatsoever. It’s primarily used for digestion help, blood sugar problems, liver bile and things of that nature. 
I don’t want to tell my husband about what I’ve found on the tea, because I don’t want to ruin his only form of stress relief if it’s just mental. 
My question: IS it just mental? Or is there something I don’t know about it? Could it depend on the specific kind? Is this an old Mexican tradition? I’ve just been wondering this for a long while now, and just recently my husband got more form his mom so I figured id post the question here, I usually get pretty decent answers to most questions, so I thought I’d ask!

Answer

It’s probably more of a placebo than anything especially if he’s been drinking it since childhood, like a comfort item from home.

Answer

Well, I'll put it this way, there's nothing a good cuppa can't fix when you take the time to enjoy it.

Answer

Or maybe she adds cinnamon which can cause him too relieve stress

Answer

I’m Mexican and we have a lot of different fixes for stuff and medicines and this and that and they help. Idk bout research and all that and I’m sure there’s a lot of people who will have their own opinion or think it’s weird or there’s nothing proven but it’s just stuff Mexicans do as cures that works. Only Mexicans will understand. Plus other races have there own stuff they do. I wouldn’t always rely on studies and research. It would come down to if it works for you or not.