Symptoms of B12 deficiency A vitamin B12 deficiency may go undiagnosed because many of the symptoms fatigue, weakness, constipation, loss of appetite, and weight loss mirror those of minor illnesses or chronic conditions, Nelson explains
Neither source is perfect alone
One of the most common inquiries is how long it takes for these injections to work
The peptide does not appear to significantly alter IGF-1 levels, pose a risk for cancer progression, or induce insulin resistance
Whilst the quantities are minuscule and generally harmless, individuals with impaired kidney function may theoretically have reduced capacity to eliminate this cyanide with very high doses over extended periods, though this remains largely theoretical at normal supplemental doses