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Therefore, receiving a B12 injection can help alleviate symptoms associated with B12 deficiency, such as fatigue, weakness, and cognitive impairment

These include: Nausea (affecting up to 1 in 5 patients) usually most pronounced during dose escalation and often improves over time Diarrhoea may be mild to moderate and typically transient Vomiting less common than nausea but can occur, particularly in the first few weeks Constipation resulting from slowed gastric emptying Abdominal pain and bloating often related to delayed gastric emptying Reduced appetite this is an intended therapeutic effect but can be pronounced The frequency of these side effects tends to be dose-dependent, with higher rates at higher doses

A study in the Journal of Clinical Biochemistry and Nutrition found that Vitamin B12 can lower homocysteine levels

KEY MESSAGES: NASO B12 provided much superior absorption of vitamin B12 when compared with oral vitamin B12 and can be used as an effective alternative

This makes the withdrawal process easier and more comfortable