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Retatrutides prescription availability in Canada is projected to follow Phase 3 trial completion and regulatory review, likely beginning in 2026 at the earliest

It is also used in other vitamin B12 deficiency conditions caused by poor absorption, strict vegetarian diet, certain stomach or intestinal disorders, or after stomach surgery

These injections typically contain hydroxocobalamin or cyanocobalamin, with hydroxocobalamin being the preferred formulation in the UK as it is retained in the body for longer periods

For metabolism of NR, NRK1 is expressed in most tissues but is absent in the spleen and white adipose tissue, while NRK2 is only present in skeletal muscle, heart, and white adipose tissue (WAT) 40

Kadiyala, A., et al

For this reason, we do not recommend this approach for any standard research protocol