"i was prescribed first the z-pack and took that for 5 days and then to continue by taking one minocycline 100 mg capsules (once a day) for adult cystic acne.  i was feeling fine the first week on minocycline but the second week, i had to completely take myself off the minocycline because i was miserable. first, it was sinus, then sinus headaches with blurry visions on and off.  then my joints started hurting, especially in my hands and lower back.  i also felt dizzy when moving too fast from one position to another and started to feel like i was under a haze all the time. "