@SaiP, Insomnia is listed as one of the side effects of Loratadine.   Niacin B3 in the form Tryptophan, Pyridoxine B 6, Folate B 9, Cobalamine B12, Magnesium, and Thiamine B 1 are needed to produce the sleep hormone melatonin.  Insomnia can also be caused by low Vitamin D and low Vitamin A.   A strict gluten free diet can be low in essential  vitamins.   Gluten containing products are required to replace vitamins lost in processing and milling.  Gluten free processed foods are not required to have vitamins added.  White rice is not a good source of B vitamins.  Brown rice is little better.  Exposure to light (even grocery store lights) and heat (during transportation) can destroy B vitamins.   B vitamins are easily lost in urine and diarrhea because they are water soluble.  If you have had diarrhea longer than two weeks, you are probably low in B vitamins.  Fat based vitamins, like Vitamins D and A, can be low due to fat malabsorption in Celiac disease, too.   Damaged villa in Celiac Disease do not absorb B vitamins and fat based vitamins and minerals well.  Supplementing with essential nutrients while villi heal boosts the ability to absorb essential vitamins and minerals.  Vitamins are stored and utilized inside cells.  Blood levels are not accurate measurements of vitamin deficiencies.  You can have normal blood levels while having deficiencies inside cells.  The brain orders cells to release their stores so the brain and heart can keep functioning.  This results in normal blood levels, but vitamin deficits inside cells.   Your indulgence in a little bit of bread is providing some, but insufficient amounts, of vitamins needed to make sleep hormone melatonin while keeping your inflammation and histamine production high.   In addition to a B Complex, I took 1000 mg of tryptophan before bed to correct my insomnia caused by high histamine levels.  Correcting my Vitamin D level to between 75-100 nmol/ml helped as well.  Also Passion flower extract is helpful in falling asleep quickly.   Please stop eating gluten bread as this will keep your autoimmune response triggering and your antibody levels won't go down and your histamine levels will stay up as well.   Celiac is a marathon, not a sprint. 

Earlier, you mentioned the possibility of adding in sweet potatoes. Have you tried that? Have you tried sourdough bread? Some people with celiac disease claim they can eat sourdough without a gluten reaction. The fermentation process alters the protein somewhat.

Welcome to the forum, @Karen Chakerian! So, for the sake of clarity, you have self-diagnosed yourself as having celiac disease but are not officially diagnosed by medical testing. Is this correct?

I’m 70 years old and have RA for 25 years. I’d never had digestive issues or even heard of celiac until 2 months ago.  6 years ago I started having serious diarrhea, dropped what little weight I had,  became very exhausted, developed rapid onset blood pressure and other symptoms. I went to the doctor for an unrelated matter and even with my records he told me they have ‘pills’ for all those things; which I turned down and sought to deal with this with homeopathic remedies.  Mid October 2024 my guts hurt terribly and started to swell. My massage therapist asked about celiac and I started to do research on it. It absolutely fits all the symptoms so I’ve been gluten free since 2 days before Thanksgiving but the huge gut persists. Thankfully the pain and cramps are gone. I look like a 90# pregnant skeleton.  I’m exhausted and looking for some encouragement from the tribe. I have good days and bad. I know living with an autoimmune disease sucks but this is even worse than the RA. 

Hi guys. Apologies for the late reply. Many many thanks for the replies. Hi - I am eating both white rice and wholegrain brown rice, due to it being very difficult to just eat brown rice. In regards to histamine foods - I am taking 10mg loratadine to combat this issue, however haven't seen any positive results as of yet. I have noticed if I am on a strict gluten free diet for around 1 week, the insomnia instantly pops up, and I have to eat around half a slice of bread for it to stop. I am trying to lower this amount, however the insomnia is still present. I have searched these forums and the internet but there seem to be no solution to this issue. I thought if I gradually reduce from half a slice and a little less, the issue will be resolved. However this is not the case.