A separate meta-analysis that pooled results of trials in older adults with mild cognitive impairment found B-vitamin supplementation (6 to 24 months, depending on the trial) had no benefits on various cognitive parameters, including executive function, information processing speed, and episodic memory (90)
A serum B12 level above 900 to 1,000 pg/mL is generally considered elevated
Current Pharmaceutical Design , 2020 Should You Taper Off BPC-157
For individuals with low levels or absorption issues, B12 supplementation, especially through injections, can provide faster absorption, allowing you to experience increased energy, sharper focus, and a greater sense of balance