Metagenics Ultra Potent-C Vitamin C 1000mg – Gentle, Buffered Vitamin C Supplement for Immune Support, Designed to Help Prevent Stomach Upset – 90 Count

Customers find this vitamin C supplement to be of high quality and excellent for immune system support, reporting noticeable health improvements. The product is gentle on the stomach and has good absorption, with one customer noting it's particularly suitable for those prone to acid reflux. While customers appreciate its value, they find the pill size very large and difficult to swallow.