zinc and glutathione New Moon Soft Glow S-Acetyl Rosehip Collagen Vitamins 60 Caps Vit C Glutathione Zinc Injections

Ann Intern Med 2004;140:533-7

Cancer Lett (2021) 502:1808

You can certainly combine the shots in the same syringe, but I do not recommend it (unless you are an expert), because if you get an air bubble in the syringe, as you extract the liquid from the vial, you will need to slowly return the liquid into the vial and re-extract it again till theres no bubbles

From Codeage Additional resources Codeage Liposomal Glutathione, Setria L Glutathione Capsules, Phospholipids, Vegan, Non-GMO, 60 CT

The honest answer is that it depends entirely on your goals

The products we worked with had the old formulation, but the following sections detail the new one