I just took one because my doc said that i have a virus that is going around. I wasted my money because i am not going to take again. I would rather drink some tea or do a steam treatment to relieve congestion than deal with the side affects. I have only had one and i am very nervous, It is almost 3:30 a.m. right now and I cant sleep, that is why i am writing this, i cant sleep. I feel like getting mad at my doc or someone but that wouldnt help anything. I just hope this crap leaves my body FAST!!! Feels like poison in my body. Should have asked the doc for a homeopathic alternative. My bad.