Doxycycline for folliculitis dosage needs to be decided according to the specifications, depending on the specifications you can take ten, four or two tablets a day. Doxycycline tablet specifications generally have 20mg, 50mg and 100mg, 20mg specifications take five tablets at a time, every 12 hours of medication, a day of ten tablets; 50mg specifications take two tablets at a time, every 12 hours of medication, a day of four tablets; 100mg specifications take one tablet at a time, every 12 hours of medication, a day of two tablets. Doxycycline need to pay attention before use, allergic to doxycycline or other tetracyclines, pregnant women, lactating women, and children under 8 years old are prohibited, the process of oral intake may cause digestive system abnormalities, allergies, headaches and other adverse reactions.