muscle spasm
"This medication produces way too many terrible side effects than should be acceptable. I received it in the ER by a doctor I did not know which is good because I would not tolerate a doctor that I did know prescribing such a poor quality medication. Not only is this my opinion but I actually know 3 other people with the same complaints. The irritability is absolutely unbearable which sounds minor but it is indescribable and waking out of sleep gasping for air because you feel like you are having a heart attack. Many other terrible things too! This medication should be given to no one!!!!"