Iron supplements are often paired with vitamin C based on the idea that vitamin C improves iron absorption. But how well does the evidence support this claim? As part of a What Is Glutathione? Purifi IV Understanding how to take supplements correctly can greatly enhance their effectiveness:, 1. Glutathione: For optimal absorption, take glutathione on an empty stomach. Pair it with vitamin C, as this Anemia: Symptoms, Causes, Types & Treatment Options The Impact of Iron on Cancer Related Immune Functions in Oncology: Molecular Mechanisms and Clinical Evidence Glutathione system enhancement for cardiac protection: pharmacological options against oxidative stress and ferroptosis Cell Death & Disease