Thank you Scott, I have looked at the ingredients (and also spoke to Aurobindo, the manufacturer) and all looks like it should be (and I'm being told is) manufactured without gluten - BUT - wondering if it could be cross contaminated.

You seem to be confused about what is gluten-free and what isn't. This article has some detailed information on how to be 100% gluten-free, so it may be helpful (be sure to also read the comments section.):    

Thought i was on a celiac forum not taking my high school English exam, that sentence makes perfect sense to anyone in the UK thank you. You seem to be pushing the agenda of a celiac diagnosis, according to this thread it seems to be hard to spot and mostly asymptomatic. So I'm not sure why the hard push, avoiding and/or lowering gluten seems to be a suitable option.

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/   

I agree with @trents, bad advice! This doctor should know that you've been following the treatment for celiac disease, a gluten-free diet, which typically puts the disease into remission unless you start eating gluten again. Stay gluten-free because celiac disease, unfortunately, is a lifelong disease. You may want to educate your new doctor on this!