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Methylcobalamin (active B12 form) Energy, neurological function, red blood cells B12 deficiency, pernicious anemia, metformin users Inner Circle: included free monthly Skinny Shot B12 + Methionine + Inositol + Choline
Deficiencies may manifest as neurological symptoms, including numbness, tingling, and cognitive disturbances
However, the largest Phase IIb trial involving 536 participants failed to demonstrate statistically significant weight loss compared to placebo at the primary 12-week endpoint, leading to development termination in 2007
The NHS typically recommends oral cyanocobalamin at 50-150 micrograms daily for dietary B12 deficiency
A 26-week diabetes study measured human activity at 1 mg, but its endpoint was blood sugar rather than long-term weight. A short outpatient cohort measured about 4.7% weight loss over four weeks at 2.5 mg. Below 1 mg, estimates rely on pharmacokinetics and mechanism
However, if supplementing for confirmed deficiency, follow-up blood tests may be arranged by your GP to ensure adequacy of treatment
