However, its common for blood tests to reveal inaccurate information regarding B12 levels since a high percentage is stored in the liver and not always revealed through testing (for example, taking large amounts of folic acid has been found to mask vitamin B12 deficiency in some patients)
Likewise, the origin of the glutathione that accumulates in this compartment remains unclear, as does whether external factors, such as glutathione-rich diets or direct intake of this compound as an antioxidant supplement, might influence its levels in the tumour microenvironment
Calcium/vitamin D supplementation and cardiovascular events
Nevertheless, supplements can affect how certain medications work, and there are even supplements that you shouldnt take while youre on hormonal birth control (and some that are fine)
The FDA lists many potential long-term effects on the package label and advises the medication to be discontinued if these emerge