Hi Word, I don't think its your thyroid drugs, but depression drugs are sex killers, you could google natural ways out of depression, many ways to try but don't mix them, then you cam drop the drugs and get your sex life back, but this would be your choice, see I'm not a doctor, just give free advice.
Good Luck
I feel your plight, as medication has put my sex drive through the floor, too, but I'm a woman. And I am married to a man who likes to have sex. He understands my problem but that doesn't make it easier to deal with. I have to really think hard about it and do all sorts of silly things to get in the mood, and my husband has to help, too. It's a pain in the butt. We have sex about twice a month and that is coming down from every day, a couple times a day when we first got together. I doubt i have been helpful, but I tried. Blessings - Blu