Prostatitis Relief

Hello,
I have been having symptoms of prostatitis for about 9 months now, the symptoms at first where everyday and worse but they have gotten better and come and go. The urologist gave my antibiotics which I took for 6 weeks and they helped but symptoms did not go away. Mainly there is a cramping during ejaculation and mild pelvic pain.
On a recent trip to Peru I encountered coca leaves and noticed that drinking the tea or chewing the leaves dramatically relieves the symptoms. If I chew about 1 to 2 grams of leaves I have complete relief with ejaculation issues.

Is this supposed to happen, or is this a placebo? I know the coca leaves have medicinal properties for many ailments but I've never heard of this one. It was coincedental that I noticed this. Unfourtunately, there is hardly any studies on this plant due to prohibition.