"i have been taking this medication for a month at 100mg, twice a day. i have had to limit my sun exposure and wear 100 spf sunscreen as i have been getting horrendous sunburns since i have started taking doxy. my hands were so burned that they swelled up and blistered, making it very painful to even wash my hands. every time i go outside, regardless of how much sunscreen i am wearing, i am guaranteed to get a sunburn. i was prescribed doxy to help with my acne but it is not worth it to me and i will no longer be taking it."