Absolutely, and in fact, Vitamin D and Glutathione injections work beautifully together. This combo is one of our most requested treatments at the clinic in Cirencester because it delivers both wellness and Glutathione deficiency alters the vitamin D metabolizing enzymes CYP27B1 and CYP24A1 in human renal proximal tubule epithelial cells and kidney of HFD fed mice ScienceDirect POWER PAIR GLUTATHIONE & VITAMIN D An important connection Studies have shown that adequate levels of glutathione are important for the bioavailability of vitamin D absorption. Meaning, if you don't DM to book your Vitamin D or Glutathione shot