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Vitamin B1 Side Effects Per the Office of Dietary Supplements, thiamine overdose is unlikely to cause side effects

The Grading of Recommendation, Assessment, Development, and Evaluation (GRADE) tool was used to assess the certainty of the evidence for the two primary biochemical outcomesserum vitamin B12 concentration increase and homocysteine reductionacross all included studies, and separately for randomised controlled trials (RCTs) and observational studies

It may cause symptoms related to neurological failure like loss of feeling or sensation, irregular bowel movements, sleep disorder, getting irritated, feeling depressed, memory loss, Alzheimer's disease

This blend also supports healthy immune function + fat metabolism

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