I injected Hydroxocobalamin, (brand: Rotexmedica) a couple of times. The day of the injections i feel no side effects, however the day after and for about 3-4 days after that i feel like sh*t, depressed, brainfog. And then it goes away. And the week after i feel fine, back to normal. Does anyone know what the reason for this may be? I have had b12 injections before by a different brand (from Doc) and never felt any sides. I got blood work and i saw that my liver numbers had gone up (P-ALAT) to 1.44 ukat/L (Normal=0.15-1.1ukat/L) so its above normal. I have only done 3 injections, one every week but i'm honestly afraid of doing another shot because i feel so bad the following days, i mean like deeply depressed. Any help is appreciated! thanks.