Here are some possible side effects of glutathione injections: Injection Site Reactions : Glutathione injections can result in localised reactions such as pain, redness, swelling, or bruising
declares having received consulting honoraria from Amgen, Boehringer Ingelheim, Merck, Pfizer, Aegerion, Novartis, Sanofi, Takeda, Novo Nordisk and Bayer, and research grants from British Heart Foundation, MRC (UK), NIHR, PHE, MSD, Pfizer, Aegerion, Colgate and Roche
Feeling change depends on your current B12 levels
A 25 to 27 gauge needle is appropriate, as it minimizes discomfort and is sufficient for penetrating the subcutaneous layer without reaching the muscle