Vitamin B12 Deficiencies Vitamin B12 is necessary for patients with a low serum level of vitamin B12 because they take particular medications or because they suffer from: Pernicious anemia Gastrointestinal or autoimmune disorders Alcoholism Patients may also have low levels of vitamin B12 if they have had bariatric surgery, are strict vegetarians, or have used antacids or proton pump inhibitors for a prolonged period
Rice DC , Cata JP, Mena GE, Rodriguez-Restrepo A, Correa AM, Mehran RJ
"Small molecule nicotinamide N-methyltransferase inhibitor activates senescent muscle stem cells and improves regenerative capacity of aged skeletal muscle." Biochemical Pharmacology
(R)-alpha-lipoic acid reverses the age-related loss in GSH redox status in post-mitotic tissues: evidence for increased cysteine requirement for GSH synthesis
Role of mitochondrial calcium and the permeability transition pore in regulating cell death
The FDA page on substances that may present significant safety risks notes potential concern around congestive heart failure for ibutamoren, citing a trial stopped early due to a possible CHF safety signal