Your GP can advise on appropriate options based on your individual circumstances
Photodegradation of Methylcobalamin and Its Determination in a Commercial Formulation This paper presents a transient absorption study of the primary photolysis of ethyl- and n-propylcobalamin in water and a comparison of the photolysis of methyl-, ethyl-,n-propyl-, and adenosylcobalamin at two different excitation wavelengths
doi: 10.1093/humrep/des013 23 HortonJSterrenburgMLaneSMaheshwariATCLiCheongY
Nat Rev Immunol 21 , 7382 (2021)
They're stable at room temperature before reconstitution
Call your provider if: Youve had persistent side effects for more than 4 to 6 weeks with no improvement Youre struggling with daily tasks because of the symptoms Youre experiencing dehydration or cant keep food down You notice anything unusual that wasnt discussed when you started treatment And again, for severe pain, allergic reactions, or signs of serious illness, seek care immediately