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Liu, X., et al., Association between dietary vitamin B6 intake and constipation: a population-based study

Using both means you're reducing the hormonal driver of miniaturization (finasteride) while also supporting the follicle cells and growth environment that miniaturization has been degrading (AHK-Cu)

Those trials show consistent benefits for anemia, neuropathy, energy, and sometimes appetite when deficiency was the cause

Incorrect administration can lead to complications

Difficulty swallowing or painful swallowing could indicate esophageal inflammation or stricture formation

In fact, iron is required for erythropoiesis, oxidative, metabolism, and enzymatic activities, and it is a cofactor for mitochondrial respiratory chain enzymes, the citric acid cycle, and DNA synthesis [4]