glutathione bleaching injection For Whiter Skin, Some Are Turning to Injections Before and After Glutathione Injection:

Early studies performed in the 1960s injected monomer and higher order molecular weight protein particulates of bovine gamma globulin into rodents

However, other methods (such as injection) can be considered more effective due to direct delivery

BPC-157 dosage protocols for neuropathy research Research protocols for BPC-157 in neuropathy contexts typically use subcutaneous administration at 250 to 500 mcg once or twice daily for 4 to 8 weeks

doi:10.3109/15563650.2012.746424

In the 1890s, pioneering studies from the laboratory of Robert Koch demonstrated that administration of sheep antiserum against diphtheria toxin to a girl dying from diphtheria led to her rapid recovery and ultimate survival