Summary: Both methylcobalamin and cyanocobalamin effectively treat B12 deficiency, with cyanocobalamin being more stable and cost-effective whilst methylcobalamin is bioactive without requiring conversion
While the RNI for maintenance is only 1.5 g daily, therapeutic oral doses typically range from: 50-150 g daily for mild deficiency prevention in at-risk groups 1,000-2,000 g daily for treating confirmed deficiency without malabsorption Some formulations contain up to 5,000 g, though there is no proven additional benefit over 1,000-2,000 g for most patients The reason for this dosage discrepancy lies in absorption efficiency
DSIP Research Delta sleep-inducing peptide (DSIP) is a neuropeptide consisting of nine amino acids (Trp-Ala-Gly-Gly-Asp-Ala-Ser-Gly-Glu) that was first isolated from the cerebral venous blood of rabbits during sleep in the 1970s
Recently, I spoke on the phone with Barbara Sahakian, a clinical neuropsychologist at Cambridge University, and the co-author of a December, 2007, article in Nature, Professors Little Helper. Sahakian, who also consults for several pharmaceutical companies, and her co-author, Sharon Morein-Zamir, reported that a number of their colleagues were using prescription drugs like Adderall and Provigil