If symptoms persist despite regular oral supplementation, absorption may be limited
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
Why Would I Need a Vitamin B12 Shot
10.1371/journal.pone.0112531 391 XiongJ.NiuY.LiuW.ZengF.ChengJ
Prioritize recovery: AOD 9604 can improve recovery somewhat, but adequate sleep (7-9 hours), stress management, and strategic deload weeks are still important