Passionflower (Passiflora incarnata)

Passionflower has many uses, and comes in many different varieties. It's main uses are for anxiety-related disorders of all kinds. 

Yerba Maté (Ilex paraguariensis)

Yerba maté is a large Amazonian tree. Its leathery leaves are dried and consumed as a tea similarily to green and black tea. It's a potent source of caffeine and antioxidants...

Catuaba (Trichilia catigua)

There are many plants in the Amazon rainforest that go by the common name catuaba. The Sunlight Experiment prefers the Trichilia catigua species for most conditions...

Muira Puama (Ptychopetalum olacoides)

Muira puama is an adaptogenic tree from the Amazon rainforest. Its main usage is for male impotence, but is aslo commonly used as a preventative supporting agent for Alzheimer's disease.