While your body produces its own glutathione and you can find it in small amounts in foods like spinach, avocados, and asparagus, it is difficult to significantly raise your cellular levels through diet alone
Beni-Suef University Journal of Basic and Applied Sciences 11:60
If your test is negative it means we can review the need for the injections and it is likely that you do not need more
Additionally, the form of glutathione matters significantly for bioavailability
[DOI] [PubMed] [Google Scholar] 8.Sikiric P., Seiwerth S., Rucman R., Kolenc D., Vuletic L.B., Drmic D., Grgic T., Strbe S., Zukanovic G., Crvenkovic D., et al
Others support shape and contour once the body has already changed