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Ultra Potent C Vitamin C Powder Immune Support Supplements Gentle on Stomach with Bioflavonoids, L Glutathione and L Lysine 8.39 Ounce

Prices as of September 26, 2026, as listed by each retailer — verify the current price on the retailer's site before purchase.

Price history tracked at Macy's price tracker

14-day low
$55.95
Sep 13 · Macy's
Best price
$55.95
−0% vs high
14-day high
$55.95
All stores
$56$56$56
Sep 13Sep 26
  • Macy's
Lowest in 14 days: $55.95 at Macy's. Highest: $55.95. Current best is 0% below the 14-day high.

About this product

Metagenics Ultra Potent-C Powder is a scientifically formulated dietary supplement that delivers a buffered, gentle form of vitamin C to support immune function and antioxidant activity. Designed for easy daily use, the powder dissolves quickly in water and contains key ingredients like calcium ascorbate, L-glutathione, L-lysine, and citrus bioflavonoids. This precise blend enhances vitamin C absorption by white blood cells, supporting the body's natural defenses. The formula is non-GMO, gluten-free, vegetarian, and produced in a cGMP-certified facility with third-party purity testing. Trusted by healthcare professionals for over four decades, it is made in the USA.

  • Buffered calcium ascorbate formula
  • Contains L-glutathione and L-lysine
  • Dissolves easily in water
  • Non-GMO and gluten-free
  • Third-party tested for purity
  • Made in the USA

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Ultra Potent C Vitamin C Powder Immune — Price History