This product was touted as a male sexual enhancer with NO side effects. It painted its prescription counterparts as dangerous. This may be true, but I believe Viswiss may be even more dangerous, especially to those with a heart condition or high blood pressure. My blood pressure is normally around 120/80, but after taking two Viswiss, I started to feel uneasy, nauseous, light headed and ill at ease. I flushed all over. I suspected there was a serious problem when my heart began beating at a high rate and pounding in my chest. I checked my... read full review »