24. St. John’s Wort (Hypericum perforatum)
- Medicinal Use: Depression, OCD, ADHD
St. John’s Wort is a bit different than some from the similar Hypericaceae family. There have been numerous tests and trials with the use of the plant. Most of them revolve around seeing if it truly helps with depression at all. Sadly, depression can have multiple causes with several great medications not helping certain individuals.

Therefore, it’s truly tough to know if St. John’s Wort actually helps. This plant seems to be linked to helping a lot of different brain-related disorders. In fact, some claim it helps with OCD and ADHD. Like depression, both can be helped by some pharmaceutical medications. Yet others may not work, so it is possible that this plant can help some with these disorders.