red urine after b12 injection is from Does a B12 shot change urine color to pinkish? The Power of B12 Injections:

This is the first step in another adenosine production pathway, which typically includes CD39 catalyzing adenosine triphosphate (ATP) to produce adenosine monophosphate (AMP)

Try to find one that contains right around the RDA for this vitamin, or only a bit more, and see if you can find a methylated one (that is, methylcobalamin)

I have been going to Balance Bodies for over a year now and every encounter has been great

For example, Trp is the necessary precursor for the de novo NAD + biosynthetic pathway (also known as the kynurenine pathway)

[152] Healthcare practitioners at clinics and spas prescribe versions of these intravenous combination products, but also intramuscular injections of just vitamin B 12