Rotate your injection spot every week (abdomen, thigh, or upper arm) to help prevent skin thickening or lumps
Higher concentration, smaller draw volume per dose
Common signs include: Ongoing fatigue or weakness Pale skin Numbness or tingling in the hands and feet Brain fog, forgetfulness, or trouble concentrating Low mood, anxiety, or irritability Poor appetite or digestive upset When B12 is low, your metabolism slows, you have less energy for activity, and appetite signals can get thrown off, all of which make weight loss harder
However, most labs in the UK use the following reference values: The vitamin B12 normal range for female and vitamin B12 normal range for male adults is generally the same, though individual levels may vary slightly due to dietary habits, hormonal differences, or metabolic factors