Doctor-prescribed vitamin C prevents winter viruses for 3 years, gentle on stomach.
This quality vitamin C eliminated my recurring winter illnesses over 3 years, working seamlessly on empty/full stomachs as prescribed.
This review is from Amazon.com for product:
Metagenics Ultra Potent-C 1000 Vitamin C - Gentle, Buffered Vitamin C Supplement - Immune Support Supplement* - Ascorbic Acid - 90 Tablets
Been taking this vitamin and brand for 3 years. Prescribed by my internist for building immunity against sickness and disease. Haven't had the viral infections I used to be plagued with every winter ever since taking this C. Not cheap but good quality and easy on my empty or full stomach.
Vitamin Basics & Tips
Vitamin C plays a crucial role in immune system support by stimulating white blood cell production and enhancing epithelial barrier function against pathogens. The recommended daily allowance is 75-90mg for adults, though some studies suggest higher doses (up to 200mg) during illness periods.
While citrus fruits remain classic sources, bell peppers and broccoli actually contain higher concentrations per serving. Modern supplements often combine vitamin C with bioflavonoids or zinc to improve absorption - a critical factor since humans cannot synthesize this water-soluble vitamin internally.
Stomach sensitivity, mentioned in the review, relates to vitamin C's acidity. Buffered forms like sodium ascorbate or liposomal delivery systems help prevent gastric discomfort. For immunity building, consistent daily intake proves more effective than megadoses during sickness, as blood concentration peaks 2-4 hours post-consumption.
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