I would say that for me the meds helped but constipation and slow digestion is still an issue.
Before being diagnosed I could not go at all, I mean nothing at all would happen, for years I had to use Dulcolax (painful and unpredictable) but everything else failed.
I tried adding fiber (flax seeds, husks, chia), I tried over the counter stuff (senna, herbal mixes, miralax, etc.) I tried drinking 3 liter of water a day, walking more, crunches to help my abdominal muscles. Nothing would help, I had no movement inside, no sounds, no gurgling, no gas even. If I didnt take Dulcolax, I could go 15 days without anything happening, it would make my belly rock hard and sore, I could not digest my food. I tried a few times to go without Dulcolax because I was worried about dependency but I would have to give in as I couldn't hold on for more than 15 days. The few times I did this I would have to take 3, 4 , 5 Dulcolax just to go.
After being medicated I started to fell weird fluttering in my abdomen, I heard gas moving around, it was freaky and strange for me. The first time I managed to have a bowl movement (BM) I was soooo happy!
I started having BMs every 3 to 4 days when I was on 100mcg of Levo, after about 8 weeks on this dose I starts to get constipated again, I was increased to 112mcg and got better, then the same thing happened. I am now on 112mcg of Levo and 25mcg T3 and same thing happened, now 3 months after upping to that dose I am constipated again, it started to happen 1 month after the last increase.
I am far better than I was, I have tummy aches once in a while and I do get gas, every 4 or 5 days I go a tiny bit, but this is not enough and I feel heavy and bloated, so I use a Dulcolax suppository (great stuff, works in 10 minutes and no pain).
My doctor is baffled, she thinks I am resistant to the hormones and so we are slowly increasing my dose, I feel a little hyper the first couple of weeks and then it's downhill again, but I do feel a million times better than pre-medication.
So, I have no idea, I guess things do improve but not 100% and it takes time.Everyone is different but this is my experience.