There are just good treatments, realistic expectations and a little patience.
Tirzepatide and Insulin Resistance : Tirzepatide improves insulin sensitivity by promoting insulin secretion in response to food intake, essential for regulating blood sugar
But heres some research: Photolysis of Vitamin B12 The rate of destruction of crystalline vitamin B PHOTOLYSIS OF VITAMIN B 12 in neutral aqueous solutions, when exposed to direct sunlight, indirect sunlight, dim daylight, artificial light, ultraviolet light, and various monochromatic light sources has been determined
doi:10.1517/14712598.2012.634793
(2) Overview AOD 9604 peptide was developed in the 1990s in an effort to develop proteins which might exhibit anti-obesity properties similar to Growth Hormone (hGH)
2012;7 doi: 10.1371/journal.pone.0034252