Welcome to the forum, @Celiac50! Vitamin A toxicity is not to be taken lightly. If you suspect that is the case, I would certainly discontinue the beta-carotene supplementation. Vitamin A from natural sources is unlikely to cause toxicity. I would also get labs done to check your levels.  May we ask your age? It's been over a year since you began the gluten-free journey so it might be a good idea to have a repeat endoscopy/biopsy done to check the status of your villous rebound. You might not be in need of such heavy duty supplementation any longer. Too much of a good thing can be bad.

Do you happen to know which geographical areas have the highest incidence of Celiac?  I have trouble believing the Celiac genes have lasted this long in the human race.  They certainly offer no positive survival benefit, and actually would have the opposite effect.  Humans  with Celiacs, living in the grain eating belts, would have been sickly and weak, and not able to reproduce as proliferatively as their healthy peers.  How did we all end up with this disease?! 

I was diagnosed with Coeliac Disease last August (2024), Marsh Disease 3 c) ie. Total villous atrophy. I was a perfect student and dropped all gluten, to the point that my TTGL is in fact 0 now and was even 6months ago (it was initially >250(!!), then 70, then 17, then 0). I am still FODMAP intolerant, possibly histamine too but mainly what is concerning me (apologies to the men out there since this most likely will not be of interest;) is that I have had a bright yellow vaginal fluid, which although is entirely odourless is perplexing. I am not worried it may be cancer as have had all the necessary tests and checks, incl pelvic ultrasound. I saw these as totally pointless as I Know it is diet/gut related. I am incredibly surprised no GP, dietician or doctor can explain it! Has anyone suffered or is suffering with this issue? And another thing, it could(!) Possibly be related to VitaminA toxicity. I have been reading A Lot about this and since I have been starving all my life and now even more so, I was/am eating Huge quantities of food. Til not long ago this involved big portions of salmon, mackerel and tuna (as I don't eat meat), eggs and Masses of leafy greens and pumpkins, carrots, all manner of rainbow veg and fruits... Then, to top it off, I Also was taking  supplements to boost my Calcium and Iron levels, one included beta carotenes, the other AlgaeCal. Now algae are red, yellow and green and apparently contain great amounts of carotenoids. The carotenes in the first supplement were in fact added and were 900mcg. I was taking 2 a day for months, 3xs the max daily amount as I am very slight. So sorry, that seems now to be 2 topics in one! But a nutritionist once told me that vitamin A toxicity can cause celiac disease... Thanks for reading and am hoping someone can shed a bit of light via their own experience!

@JForman, Did you know that Celiac disease genes can be traced back to the Neanderthals?   At times I have found it amusingly distracting to think that we're eating according to our ancestors who had eaten gluten-free for thousands of years, before those homo sapiens  started growing grasses all over the place.  (Yes, grains evolved from grasses.) Grocery shopping is now hunting-gathering.  Peeps that eat gluten are grass-growers.  Watch the movie "Caveman" starring Ringo Starr.  Never fails to remind me that we belong to the winning tribe.   Have fun with being different!

@Rejoicephd Getting glutened and gastrointestinal Beriberi have very similar symptoms! Drinking alcohol cleaves thiamine in half making it useless.   A twenty percent increase in dietary thiamine produces an eighty percent increase in brain function.   Symptoms seem to wax and wane mysteriously, depending on how much thiamine you absorb from your food on any particular day.  Thiamine deficiency is on a sliding scale.  The lower your thiamine , the worse you feel.  This can drag along for years.  Alcohol depletes Thiamine further.   Occam's razor. A Must Read: Gastrointestinal Beriberi and Wernicke's Encephalopathy Triggered by One Session of Heavy Drinking https://pmc.ncbi.nlm.nih.gov/articles/PMC6739701/