Haven't tried it, but I'll give you my thoughts based off the ingredients. . .
After checking out the RTD, it has one decent ingredient as far as enhancing libido; that being Eurycoma. But it doesn't list a mg dosage, so who knows - it could just be in there for the label appeal.
Aside from that, it doesn't look that promising - I thought arginine went out awhile ago as the "poor man's viagra"?
If you really want a product that will boost your libido, along with increasing Testosterone, check out Alpha Male.