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Some more severe, but rare, side effects that can occur are low potassium levels, muscle cramps, irregular heartbeat, chest pains, or blurred vision

Here are some groups at higher risk of deficiency: People with gastrointestinal issues: Conditions like pernicious anaemia, Crohns disease, or those who have undergone gastric bypass surgery can affect B12 absorption

Its important to know the standard dosage and what affects it

What are the possible side effects of vitamin B12 injections

The FDA does inspect compounding pharmacies but does not test every individual batch

The amino group at the 5-position combined with the methyl substitution at the 1-position creates a molecular configuration