ghk-cu for face Skin Perfection 1% Copper Peptides Serum Hair Scalp .5 oz Cu + Peptide Complex GHK-Cu - Peptide for Collagen,

as Foggyme says potassium is something that needs to be closely monitored if you have significant anaemia but isn't something I would recommend supplementing without medical supervision

B12 is a water-soluble vitamin, consult your healthcare practitioner to determine the right dose for your needs, especially if you are pregnant, breastfeeding, taking medication, or have a medical condition Supports Your Daily Wellbeing: Vitamin B12 contributes to normal energy-yielding metabolism, the reduction of tiredness and fatigue, normal functioning of the nervous system, normal psychological function, normal red blood cell formation, and normal functioning of the immune system

Marinova, M., Solopov, P., Dimitropoulou, C., Colunga Biancatelli, R

Most peptides use subcutaneous injections with small insulin like needles