Recognizing the signs, from persistent fatigue and brain fog to mood changes and tingling, is the first step, and a simple blood test can confirm whether B12 is the cause
Methionine is then used to form S-adenosylmethionine (SAMe), which is a universal methyl donor essential for the synthesis of lipids, proteins, DNA, and the formation of myelinthe protective sheath around nerve cells
Heres a helpful overview FAQ What is IV therapy
That said, most users cycle it simply because fat loss goals are achieved within 3-4 months, or they want to assess baseline after treatment
That means 12mg/mL or higher
If you are over age 50, the Institute of Medicine recommends that you get extra B12 from a supplement, since you may not be able to absorb enough of the vitamin through foods