Metagenics Ultra Potent-C Chewable – 250 mg Buffered Vitamin C with Bioflavonoids, L-Lysine & L-Cysteine – Immune & Antioxidant Support – Non-GMO, Gluten-Free – Natural Orange Flavor – 90 Tablets

Customers find the vitamin C supplement to be of excellent quality and appreciate its chewable form, noting it doesn't leave a bad aftertaste. They find it effective, with one customer mentioning it helps during cold and flu season.