So I used this so far for nootropic effect, 1 tsp at a time, seems interesting. more on the NDRI end of things then SNRI or SSRI. I like the effect better, little easier to focus and less cloudy then say St Johns wort, but also less potent then St Johns Wort. For this one taking more is not necessarily better, will give you a headache. Below is study regarding antidepressant effects. https://www.ncbi.nlm.nih.gov/pubmed/15991001
From reading it looks as some of the other sources of Catuaba are more potent than this one, specifically Erythroxylum vaccinifolium, but I imagine its easier to source the Trichilia catigua used in this extract.
Can not speak on the aphrodisiac effects at this time.
I use bulk supplements to blend my own pre/postworkout but occasional try the herbs and such available through them.