Would i be ok to switch from one to another straight away or is that a bad idea. i'm currently taking 150mg effexor xr after uping it from 75mg 5 weeks ago and have gone down hill over the last cover of days is that just my body getting used to the 150mg and i will get bk to being ok again or does this mean the effexor isn't working for me thats why iv been looking up other meds to try and have come across fluvoxamine which i think relates to my symptoms. any info would be great. thanks