Although dryness (sicca) of the eyes and mouth are the classically described features, dryness of other mucosal surfaces and systemic manifestations, including fatigue and arthralgia, are common ( Digestive involvement is frequent in pSS, including autoimmune disorders, such as chronic atrophic gastritis, esophageal motility dysfunction, lymphocytic colitis, primary biliary cholangitis and autoimmune hepatitis ( pSS-related atrophic gastritis and associated PA may require parenteral or sublingual vitamin B12 supplementation (2)
Unless you have a diagnosed vitamin or mineral deficiency, nutritional needs are best met with food, not supplements
Absorption Challenges and Requirements Getting vitamin B12 into the body is complex
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