Anxiety is very common with Eq. Panic attacks are the by product of increased stress on the body experienced in past incidents. 'They serve as an integral part of the physiological make up of the body's natural defence mechanisms'. As a result, early onset of anxiety symptoms with Eq may be a prelude, as to what's to come if their are already underlying traits i.e. behaviour wise, or/and incidents experienced . I have been using it for a while with no problems. However, a colleague had to stop after 3 weeks of usage, because he was going "locco". He said, 'he was becoming moody and noting outbursts of anger towards his fellow employees quite regularly'.