Dear Sir, I am an merchant navy officer, and into this field from 2003,I was not comfortable every time before going for an assignment leaving family behind. In last 6months or so my overall tension-anxiety level had gone up,and in December last yr I suffered a panic attack (as concluded by my doctor) just before going for voyage and had to cancelled that assignment. Returning home I went for councilling followed by an psychiatrist consultation. That doctor prescribed me zaptra 12.5(once at bed time) and zapiz 0.25 as SOS for future panic attacks. My insomnia was increased after starting zaptra,I never had zapiz as I didn t get any panic attacks till now but not went for any assignments till now. Now doctor advised me go to zaptra25 from initial 12.5 after one month and asked me to carry medicines with me and go for assignment without any further hesitation also told me to continue zaptra for 6months. But as I can t carry those medicines onboard and as it might cause some hazard as my nature of job demands alertness and reflexes all the time,I thought of withdrawing zaptra12.5(I didn t increased the dose to 25). Now after withdrawing zaptra12.5 I am facing following since last 5-6days which are very annoying, Restlessness,nausea, acidity, sleeplessness, vomiting tendencies and feeling out centered. In the mean time I also commit for an assignment in another 10days time,but at today s cond it s really difficult for me to go for assignment with all these discomforts. Pls advice....