I have been taking Doxycycline for about a month now for adult acne. I have pretty fair skin and I live in Florida so I always wear plenty of sunscreen. Since I have been on this medication I have gotten 2 pretty bad sunburns (even though I was wearing 30 SPF sunblock) to the point where my skin has a constant tingly sensation that doesn't go away for a few days. I don't think it's worth it to take this just to treat acne, but at the time it sounded better than Accutane!