... rifampin for 4 months... RA meds increase the likelihood of latent TB becoming active. I took one capsule Tues night, to make sure I wasn't allergic, then took the prescribed 2 capsules last night--I woke up around 6 or 7 times during the night, woke up feeling confused in the morning, kinda spaced-out... just not myself all day long! Shaking, trembling, it's kind of like a withdrawal feeling--I can't remember what I did during the day! It's just now starting to wear off--anyone else ever have effects like this? I'm a 57 yr old lady. Thank you