I'm getting ready to down a dose right now - I rarely take anti-b's - and the vanco made me so sick - had some bad side affefcts (Red man and thrush) my immune systen is way down after a very psically challenging move this summer and then being so underweight from not being able to eat I'm sure I got this from one lost little bug running around a docotrs office - its the only place I"ve been.... will gve it my all!