Although extremely rare, there have been cases where people have developed a redness or a rash around the injection site indicating a Vitamin B12 allergy
for more details, see Sampson et al., 2021 13
Here is exactly why, with the published clinical evidence on half-life, dual-pathway activation, GH pulse profile, and which patient profile each peptide actually fits
There are different forms of B12 available in supplement form including cyanocobalamin, methylcobalamin and hydroxocobalamin that for the most part are believed to be equally effective
Additionally, ocrelizumab has shown efficacy specifically in PPMS cases, offering a notable therapeutic option while other interventions for PPMS, are limited [141]
This includes starting with big doses, then keeping up with smaller ones