Moving along with my nutrition supplements deep dive (starting with the S category), I found a few interesting ones.
One of the more interesting plant supplements is called Thunder God vine. Don’t let the name scare you. This NIH article gives you detailed information about what it’s good for.

What about tribulus terrestris? This one failed to deliver what it promised, according to PubMed and NIH studies. 

This NIH reference had a lot to say about Turmeric, but it wasn’t the miracle supplement that I had hoped it would be.

Valarian root, on the other hand, does seem to have a mild calming effect, according to this NIH article.