BTW, to say this stuff fucks w libido is like saying the catholic church had a few problems w some boys, just a few isolated incidences. I'm in the middle of a cycle and the sex drive was amazing. I would bug my gf everyday to have sex and still walk around w a chub. I was beating my dick like it owed me money. I started the letro, and bam, gone...like nothing, sex hardly interests me at all. My gf's prob happy for the rest though.