Wow. I wish I would have known that my fingers and my feet were gonna tingle if I was out in the sun. I am an avid surfer and while after the first two days I had no side effects whatsoever, by the fourth day, the burning pain in my face, hands and feet was excruciating. The prescribed me this because I had been with someone who had been diagnosed with Chlamydia so they automatically treated me anyway and by the fourth day when I found out I was negative, I stopped taking it. The burning sensation was so abnormal I couldn't sleep. DON'T GO IN THE THE SUN WHATEVER YOU DO!!!