Not sure on Sjogren's but I do take it for fibro and lupus and it does give me more energy (when I remember to take it!). I can't see how it would exacerbate Sjogren's.
Thank you! After posting this I did check with my rheumatologist, who said that it could do no harm whatsoever. Not what I was expecting from a traditional, allopathically-oriented doctor :)