Vitamin C improves the absorption of iron from plant sources such as vegetables and grain products (non-heme iron) and from animal sources such as meat and fish (heme iron)

Glycine can have calming effects and is sometimes used to treat sleep disorders and anxiety

play a role in regulating homocysteine ​​levels in the blood

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and hypothyroidism (an underactive thyroid gland)

Melatonin im Speichel Vitamin C improves the absorptionSaliva sample to measure free, unbound melatonin levels. A melatonin test measures the concentration of the hormone in saliva. This allows you to identify a melatonin deficiency or excess.