Synopsis

Source of validity: Scientific
Rating (out of 5): 3

Phosphate ascorbate is a buffered form of vitamin C (ascorbic acid), often in the form of sodium ascorbate or calcium ascorbate phosphate. Its use to support the capillaries is primarily based on the well-established role of vitamin C in vascular health. Vitamin C is essential for the biosynthesis of collagen, which is a key structural protein in capillary walls and other connective tissues. Deficiency of vitamin C leads to weakened capillaries, resulting in easy bruising, bleeding gums, and other symptoms of scurvy. Several studies and reviews confirm that adequate vitamin C intake helps maintain the structural integrity of capillaries and reduces capillary fragility. Buffered forms like phosphate ascorbate are often preferred for individuals sensitive to the acidity of pure ascorbic acid, though there is no unique evidence that phosphate ascorbate is superior to other forms for capillary health specifically.

While the evidence supporting vitamin C in general for capillary support is strong, the specific evidence for phosphate ascorbate (as opposed to other forms) is indirect and based on its bioavailability and gentler impact on the stomach. Thus, the rating is a 3: the underlying support for capillary health is solid, but direct clinical evidence for phosphate ascorbate as a unique agent is limited.

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