I was diagnosed with Sjogrens about 3 years ago after waiting to see rheumy when my blood test already showed things were awry 3 years prior.
Not having much for symptoms; occasional soreness in salivary glands, occasional dry eyes - I wear prescription glasses all the time, occasional dry mouth - still gum-chewing 11+ years after quitting smoking, that seems to resolve the dry-mouth issues for me thus far.
The MAJOR issue for me for about the last 11+ years has been debilitating fatigue. AND, do I have news!
I have been supplementing with various herbs and vites - helps somewhat but still needed to nap most days.
Recently, I came upon some info re: beetroot powder and l-carnitine amino acid. I currently take 2 capsules of beetroot powder per day (each ~ 500 mg - I fill my own caps) and 1 capsule l-carnitine amino acid (500 mg). Both of these work with the mitochondria in cells bringing energy directly into the cells.
Wow! The first day, I felt a difference. I can go 4 to 5 days at a time without napping during the day. There are precautions - if you are pregnant. Check out the literature. Has been a blessing in disguise for me tho'.