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Tell your doctor immediately if any of these unlikely but serious side effects occur: muscle cramps, weakness, irregular heartbeat
Check expiration dates regularly
Vitamin B12 Injections These injections are prescribed by your doctor and can correct a deficiency of this important nutrient
Wait 30-60 minutes
Folate, B12 And MTHFR MTHFR stands for methylene-tetra-hydro-folate reductase , an enzyme that reduces 5,10-methylenetetrahydrofolate to 5-methyltetrahydrofolate
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