can b12 injections cause weight gain vs Lipo B12 Why Do I Feel Worse

It can be associated with the lack of B12 and iron deficiencies

When PNP was inhibited pharmacologically by the compound immucillin H (ImmH), intracellular cleavage of NR to NAM was prevented, and NAD + synthesis was potentiated from NR both in vitro and in vivo 25

It also means the dosing window is more flexible than peptides that require precise timing around growth hormone release patterns

Contact your GP if you experience severe or worsening fatigue lasting beyond 8 weeks, extreme weakness, dizziness or fainting, persistent vomiting preventing adequate intake, or any symptoms suggesting dehydration, anaemia, or other medical concerns