Hi,  After months of suspecting everything being gluten contaminated, I think it’s histamine intolerance mimicking some glutening symptoms. The biggest thing that settled it was my daughter’s neurological reaction fermented foods and probiotics general. I’ve tried this twice within a gap of six months. I do recognize now in addition to that avocado, spinach, oranges, and tomatoes absolutely make things worse.  I see a lot of ppl here having tested their DAO levels via blood test, but I can’t seem to get an allergist to even recognize the condition, let alone to test for it. Additionally, I was wondering if there was any correlation between nutritional deficiency and histamine intolerance, and if any of you have seen reduction in histamine issues post supplementing.  Thank you.   

About a month ago I had a blood panel done for digestive issues and tested weak positive for celiac. My tTG IgG was a 6 with the range being 0-5 negative, 6-9 weak positive and 9+ positive(I have an IgA deficiency so they measured with IgG). Afterwards my doctor requested I have an endoscopy with a biopsy done and received results with symptoms in my small intestine such as DUODENAL MUCOSA WITH MODERATE VILLOUS BLUNTING, MODERATE CRYPT HYPERPLASIA AND INCREASED INTRAEPITHELIAL LYMPHOCYTES (MODERATE MUCOSAL LESION, and a final note stating "The findings are consistent with celiac disease in the proper clinical setting. Correlation with serological studies is recommended". I got these results 3 days after testing before my doctor contacted me and cut out gluten seeing I likely have celiac and feel much much better. However, I just met with my doctor and they informed I must get another celiac blood test done to confirm my diagnosis because my original blood test is so weak, despite the fact that my endoscopy showed strong indication of celiac, therefore I must reintroduce gluten into my diet and start feeling horrible again. And I am curious on whether or not this is a typical diagnosis route and if I should consider reintroducing gluten again to ensure or just assume I have celiac. And will I still be able to get an official diagnosis without another positive blood test and reintroduction of gluten?

Fascinating. No ingredient in Dr. Reddy's Sumatriptan SUCC 100 mg has gluten, or should have gluten. But the doctor said ask the pharmacist. The pharmacist said call the manufacturer. And the manufacturer said "it contains gluten." 

You can search this site for prescriptions medications, but will need to know the manufacturer/maker if there is more than one, especially if you use a generic version of the medication: To see the ingredients you will need to click on the correct version of the medication and maker in the results, then scroll down to "Ingredients and Appearance" and click it, and then look at "Inactive Ingredients," as any gluten ingredients would likely appear there, rather than in the Active Ingredients area. https://dailymed.nlm.nih.gov/dailymed/   

This is much later than these posts, but on April 29, 2025, I called Dr. Reddy's Labs about Sumatriptan SUCC 100 mg tablets and were told that they DO contain gluten.