Venlafaxine - warning mention of suicide

I've been given an antidepressant called venlafaxine. I took just one tablet yesterday and within an hour didnt feel good. I feel rotten right now. So I googled if it's related to tramadol which I cant have it made me so agitated I tried suicide when I took it. It was a horrific time I really couldnt think straight. The venlafaxine effects arent as strong as the tramadol but I'm still really scared and its thrown memories back up :( so the 2 medicines are quite close in composition I found out from google. Feeling so fed up at the moment. Theres not many drugs I can seem to have. Anyone else the same? Thankfully I'm not alone this time as my husbands home