JuggaloDad,  A gluten-free diet is a cut and dry fix for some, but it's more complicated for many of us including me.  I suffered from an infant to age 56,  It took almost 10 years for me to zero in on non-gluten foods that caused me GI issues/pain.  Zeroing in on the non-gluten items wasn't as easy as it was for hidden gluten for me.  Dairy, coffee and onions was the easiest, but corn, nuts, strawberries and bananas were the hardest.  I finally did the Everywell test that matches foods with one's blood type.  The test showed I could tolerate cheddar and mozzarella cheese as well as certain nuts.  The test did show the positives and negatives of quite a few other foods as to how they matched my blood type. 

My daughter has only been eating gluten free for maybe 2weeks and she is still complaining about her stomach pains and I'm under the impression that that is probably long term sign effects that her body is dealing with.... She went months before the diagnosis and well if she is still doin the eating disorder things then I'm sure that is only prolonging recovery on her guts.... She is very withdrawn with This entire process so I can only go off what I see and am aware of.... She at first refused all gluten free food and is now only eating gluten free but not 3 meals at day or anything... dietary doctor said for he to eat in like snack portions ,which she does but i would like to see her eat more but I'm ok with he atleast tryin.....I know it's a lot on her....but Im hoping maybe within a month she will stop experiencing the pains in stomach ( as long as she isn't sneaking gluten) and she will see the positive side of it all....., I'm also hoping that once we get a diet situated that her depression and etc balances out...... She is anti medication ( which is weird knowing she was self medicating with THC ) , so I'm hoping the nutrition and diet balancing will improve some of her mental pain as well .... I know that at 16 alot of factors come into play but I just want my daughter healthy and successful and this Celiac is nothing to try to overlook... ..

You could try CBD for her instead of THC, although I don't think it enhances the appetite the way THC does.  With anorexia appetine is everything.  CBD also attaches to the opiod receptors, without the psychotropic effect so it may help with the withdrawal from gluten. There are lots of vitamin and mineral deficiencies caused by Celiac Disease the the doctors are often not aware of.  Vitamin D, Thiamine (B1). Also B2, B3, B5, choline and Iodine are very common and it takes larger doses at first to replenish than the minimum RDA.  Deficiency in these slows the healing process because they process glucose for energy and iodine is essential for replacing old and defective cells.  Especially when dealing with anorexia.  As her small intestine heals she will begin to absorb most of the other 20 essential vitamins and minerals will be fullfilled though diet.

Hello @Farmerswife As @trents said talk to your doctor about changing to a different drug.  I I was given a prescription for Zanax, took one dose and could not sit down for four hours.  Twitching all over, and my eyes felt like they were propped open with toothpicks.  Perhaps the old standard, often refered to as "mother's little helper" Valium would help. Celiac Disease causes deficiency of vitamim D.  Low vitamin D causes depression.  Starting at 1,000 IU a day I increased every few days until at 10,000 IU after 3 days it hit me "This is sunshine in a bottle" and I haven't been depressed since.  That ended a depression that had lasted from when I was 39 until 63 years old.  It was like an unending SAD Seasonal Affective Disorder. Another mineral deficiency that helped me was low dose, 5 mg, Lithium Orotate.  It reduced the anxiety that it had to get done now.  Most of our lithium comes in our drinking water.  With everyone drinking filtered or bottled water, we become deficient.  I think it may explain the explosion of mass shootings.  Between low vitamin D and low lithium intake, we are in a mental meltdown.  

Welcome to the forum, @Farmerswife! You are correct. Cornstarch should not contain gluten unless there is an issue with "cross contamination" with wheat/barley/rye in the processing. Even then, I can't imagine there being enough gluten in those pills/caplets/capsules to cause a reaction. Is this med in pill form, caplet form or capsule form? If capsule, it is possible that the capsule itself is made from wheat.  Another possibility is that your are "cross reacting" to the cornstarch. Maize is a fairly common cross reactor in the celiac community. But even so, there would likely be little maize (the protein component of corn) in the starch. Still another possibility, and the most likely one I'm thinking, is that you are experiencing a side effect of the med itself. It is an SSRI. Have you tried other SSRIs. SSRI's listed side effects include nausea and diarrhea. However, Escitalopram has the reputation of having less of a tendency than other SSRIs to produce these side effects. But you never know. Every individual is different. Have you tried other SSRIs?