I have low T and Hashi's resulting piss-poor libido. After reading various forums, I discovered catuaba bark and muira puama. Mixing 1/2 cup of each into 3 cups of high-proof vodka, I created a tincture of this stuff to try. However, even on a dropper/day I get weird heart feelings... like I have a lump in my chest... and just feel really tense/anxious. Anyone tried this stuff before? Know anything about the suggested dosage?