US$ 25.84
b12 subcutaneous vs intramuscular injection Optimal Sites for Maximum Absorption and Benefits b12 injection subcutaneous vs.intramuscular How
Description
Sub q should in theory give close to 100% bioavailability, but we really dont know the one PK study never tested it, so theres no measured number and no dosing conversion behind it

Starting at $150/month

But both should still be dosed in the morning to avoid circadian disruption

Wolters Kluwer Health