I have had severe Sjogren's for about 10 years now. In my case, Sjogren's has become systemic and has not only affected my eyes and salivary glands but has also invaded several other parts of my body including my digestive tract. This has left me with severe and chronic constipation amongst many other issues.
I see a gastroentonologist regularly for my problems (as Sjogren's has also affected other organs in my digestive system) but in particular for my constipation, I take the following steps to help address the issue.
1. Make sure you are eating enough fibre. That means you have to have at a minimum 30 grams of fibre daily. You must learn how to become an expert in fibre intake. This is one of the most important factors that will help you.
2. Drink plenty of water. At least 8 to 10 glasses of water daily.
3. Eat a pro-biotic yogurt daily for the rest of your life. This will help the intestinal flora to thrive and will help you get some relief. It took me about a month and a half to obtain optimum levels.
4. Get regular exercise. Often brisk walking for 1/2 hour will help get things moving in the right direction.
5. Finally, when I've done all of the above and still am "stuck" I take a behind the counter laxative called " Lactulose".
That's what works for me.