For a once-weekly peptide like semaglutide where consistent dosing drives therapeutic response, these errors accumulate over the life of the vial
B12 plays a very significant role in the bodys neurological and circulatory systems
If you have known MTHFR mutations, a history of poor response to cyanocobalamin, or strong preference for methylcobalamin, seeking a formulation with that form is reasonable
Shaking creates agitation and foam, which can damage the delicate amino acid chains of the tesamorelin peptide
The insomnia should settle, but as others have said you'd be better to avoid that form of B12 in the future
That supply figure matters for planning a full cycle: an 812 week protocol that steps down in frequency will typically consume less than you would expect, because the maintenance phase uses far fewer doses per week