On the contrary, Pathak and Rajput reported that olanzapine (in neutral, acidic, and basic solutions) undergoes photodegradation under irradiation in a photostability chamber for 15 days (Pathak and Rajput 2009)
[DOI] [PubMed] [Google Scholar] 126.Sikiri P., Seiwerth S., Grabarevi Z., Rucman R., Petek M., Jagi V., Turkovi B., Rotkvi I., Mise S., Zorici I., et al
The difference between 5 units and 7 units on a syringe is tiny, and that small measurement error could mean a 40% dosing difference
"TB-500 as a potential treatment for musculoskeletal injury." Front Pharmacol
Their existence is noted
This clinical observation is possibly because the methylcobalamin delivered by this method is better absorbed into the bloodstream, or it is more bio-available, or the effect is more noticeable because of the constantly higher blood level