Because the body is efficient at excreting excess B12 through urine, there is no established tolerable upper intake level (UL) for the vitamin
[2] How to Manage Discomfort After B12 Treatment Effective management of post-injection discomfort involves both practical self-care measures and appropriate medical follow-up
More serious B12 deficiencies have the potential to impair heart and neurological function, leading to a wide range of serious symptoms, including but not limited to tinnitus, severe joint pain, memory problems, depression, anxiety, poor muscle function, ataxia and changes in reflexes
The key difference comes down to bioavailability, which is how much of a nutrient your body can actually absorb and use
Moreover, the relationship between B12 levels and mood allows for a nuanced understanding of mental health
For instance, patients with liver disease may experience fatigue, jaundice, or abdominal swellingsymptoms related to hepatic dysfunction rather than the elevated B12 itself