b12 injection absorption How injections can boost energy and health | Mind Matters Weight Loss Clinic posted on the topic Optimal B12 Injection Sites for

5-Amino-1MQ is not FDA approved as a standard treatment for anti-aging, fat loss, insulin resistance, cardiovascular disease, or general wellness

For purification, harvested cells were first re-suspended in chilled lysis buffer (20 mM Tris [pH 7.9], 0.5 M NaCl, 5 mM imidazole, 10% glycerol, 1 mM DTT, 1 mM PMSF) and the lysis mixture was sonicated on ice

Skin moisture: B12 may help retain moisture in the skin, leading to improved hydration

Sadly, I didn't end up using them all, but was very careful to store the remainder in a dark, cool spot (which certainly never exceeded 25 degrees Celsius), and the ampoules themselves have never been taken out of their boxes for any reason, so exposure to light won't have been an issue