Hello, yes.. first post. I will start off by first saying I was on Effexor (150mg per day) for about 5 years and never had any issue with anxiety or funky side effects beyond no sex drive
and the worst side effect of all: withdrawal from effexor.
It became too expensive to take and I wanted to try other options. Tried Celexa and I got very bad anxiety after a few months. Now I am on Nortriptyline (first started at 30mg per day, now at 60mg per day). The problem:
I've read into things like serotonin deficiency, maybe I do maybe I don't have that, but the issues I am now having are worrying me. If I haven't take my dosage for the day I get very lightheaded, head pressure, tingling in the arms and legs (floating feeling), loss of appetite, tense muscles, and low body temp (94-95 degrees even under blankets) my blood pressure also seems to rise (around 155/110, heart rate at 90-100bpm) I get anxiety from these symptoms because I don't know what the hell is going on. The symptoms subdue after I take my meds, but it seems to be helping less and less. I noticed I was eating a lot of foods with high tryptophan, which helped a ton, but I wonder if I am crashing from not eating/drinking them.
If this persists I will go back to Effexor, any feedback? thanks!
 I have also realized these symptoms are related to Thyroid conditions in men, I had a thyroid test a few months ago.. not sure if I should get another.