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Sterile bacteriostatic water containing 0.9% benzyl alcohol
Consult a healthcare provider before supplementing if you: Take blood thinners (vitamin D affects clotting) Use metformin, or proton pump inhibitors (both affect B12 absorption) Have kidney disease (impairs vitamin D metabolism) Have a history of kidney stones (excess vitamin D increases risk) Are being treated for any chronic condition Testing first ensures you get the right dose
Chronic heavy alcohol consumption can impair B12 status through poor dietary intake and malabsorption, though occasional alcohol is unlikely to significantly affect supplement absorption
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