Vitamin B12 side effects Side effects from vitamin B12 supplementation are rare, and only occur with B12 injections, not oral supplementation, Allen says
But once reconstituted, you should discard any remaining solution after 28 days
The reason: since the fragment contains only the C-terminal part, it lacks the binding domains for GHR (most of the affinity of hGH for GHR lies in the central part of the molecule)
Per VetOne's website each mL of liquid contains: Cyanocobalamin (Vitamin B-12) 1000mcg, sodium chloride, ammonium sulfate, citric acid, sodium citrate, and benzyl alcohol (preservative)
If you want deeper hydration and a full nutrient reset, IV therapy might be the better fit
Overdosing can lead to elevated B12 levels and potential side effects, while underdosing may not adequately address symptoms