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P and GSL medicines are collectively known as Over-The-Counter (OTC) medicines
Thiamin supplements may also help for people who experience: malabsorption syndrome severe, prolonged vomiting gastric bypass surgery renal replacement therapy hyperthyroidism People who are pregnant, lactating, or use diuretics may also benefit from vitamin B1 supplements
For others, it can take a few weeks to notice big changes
Yoshino J, et al
Nervous System Support Essential for brain and nerve function, B12 promotes optimal nervous system health
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