As well, methylation helps to produce neurotransmitters for memory, concentration, and mood
The vitamin B 12 coenzymes are very unstable in light
Unlike some peptides that require cycling to prevent receptor desensitization, AOD-9604 does not appear to lose efficacy with continuous use based on available data
For example: Fatigue, unexplained weight loss, or abdominal pain may indicate liver disease or cancer Easy bruising, night sweats, or feeling full quickly (early satiety) may suggest a myeloproliferative disorder Swelling in the legs, reduced urine output, or persistent nausea may point to kidney disease In cases of very high B12 from injections (not oral supplements), some people have reported headache, nausea, diarrhea, facial flushing, or skin rash
D., Quan, S., Kang, T., & Koch, R
However, there are also cases when additional factors such as lack of sleep, poor diet, and deficiency of other vitamins like iron, folate, and others, contribute to the issue