I'm prescribed on Biaxin XL (500mg clarithromycin) for a sinus infection. Taking 2 after dinner every day for the next 2 weeks... The stuff makes me feel like garbage. I feel sick as balls and can't sleep for my life. I smoked one night while on it.. nausea instantly went away and I got a good nights sleep Anyway does anyone happen to know if it's okay to smoke on this stuff? There seems to be too many conflicting arguments with the whole immune system theory.