Antidepressants can mess up your metabolism and your blood sugar levels.
I understand that most people suffer from elevated glucose, but in my case it was the opposite. As a result of taking Citalopram for many years I developped very low blood sugar levels - I would faint, shake, get fast, irregulat heart beat and become very pale while my lips and nails turned blue. Anyone who's ever had low blood sugar spells knows how awful they are (you actually feel you are about to die).
Each time I told my doctors about it, they would say "just eat smth when you feel you are about to faint" but that's easier said than done as I had no appetite and these spells came several times a day in between meals, after meals, before meals, at night.
Once I was at the doctor's office after lunch and my glocuse level was so low as if I had been fasting.
The scary part is that I lived with this problem for many years, until it became untenable - it had literally taken over my life.
So, I switched from Citalopram to Zoloft and after a few months, lo and behold, no more shaking, no more fainting and my blood sugar was normal.
Those antidepressants really fucked up my metabolism while I took them. If I had to do it all over again, I would skip them altogether and take my chances with anxiety and depression.
I am sorry you suffer from metabolical changes caused by antidepressants. I wish you all the best and I hope your doctor can help you find something which works for you.