I been taking incresed dose of venlafaxine 150mg for 4 wks, today i feel anxious, nausea, heart racing, no energy. can this be meds or just anxiety?

Consult psychiatrist: Your medication has another name effexor, (venlafaxine) given for depression and anxiety conditions. Escalating dose is always done by psychiatrist every 2-4 weeks until they see better effects. Chemically it does increase neurotransmitter of serotonin and norepinephrine and elevate your mood.You have either side effect of the medication or you r not responding to meds. Consult your psych doc.

Anxiety: If these symptoms were present before the increased dose then it is likely that the venlafaxine is just not helping it. You can see these symptoms as a side effect but that would usually start soon after starting it. So, i view of the fact that this is happening today, a recurrent anxiety episode is most likely. Of course, talk with your doctor about this.