I would have sworn blind that I have a physical reaction to these two ingredients. I recently got prescribed some melatonin (it's only available on prescription in the UK) and noticed it had lactose in. I fought for the NHS to perscribe me my usual brand, which has worked fine for me in the past. When I looked, it had the same amount of lactose in as this new prescription.
This really shook me. I know the mind is powerful and can manifest physical symptoms, but to have been "tricking" my self for so long was very eye opening. I'm going to try to get someone to crush up and randomise the new and old meds to see if I can tell the difference blind.
I'm starting to think this has been a mental condition this whole time. I would have bet all I had that it was a real illness a week ago.