I have been taking 100 mg Doxy for about 4 weeks, with 2 weeks left to go. I have experienced the sunburn, even with 50 SPF sunblock! I also have had the tingling feeling when I sweat or am exposed to water. I think this tingling is caused by sun exposure, though. I may not look burned but feel it. Right now I feel like I have acid reflux, almost constantly, like there is a tickle in my throat right under my sternum. No heartburn, just a little queasiness. I found out from this website that you shouldn't take it before you go to bed, which I have been doing, so I'll stop that. I've also been trying to take it without food but it causes my stomach to get upset. Is there any food anyone recommends for dealing with this? Does alcohol affect this?