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Nausea (41%), diarrhea (23%), vomiting (20%), and constipation (18%) are the most frequently reported

Common side effects of oral glutathione supplementation, when they occur, are typically mild and may include: Gastrointestinal symptoms such as bloating, cramping, or loose stools Mild allergic reactions, including skin rash Abdominal discomfort or nausea These effects are generally dose-dependent and often resolve with dose reduction or discontinuation

The 2 drugs were injected subcutaneously in the same time in 2 separate sites in the abdomen

Also, since you need stomach acid to absorb B12, long-term use of acid-suppressing proton pump inhibitors (such as Nexium, etc.) can lead to B12 deficiency, as can chronic intestinal conditions such as Crohns disease, celiac disease, and intestinal parasites

B12 in particular is important for healthy nervous system and brain function, among others