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Metagenics ImmuCore - 333 mg Vitamin C - Immune Support Supplement - with Vitamin D, Zinc & Mushroom Extract - Gluten Free & Non-GMO - 90 Tablets.

NOW Foods Chewable C-500, Cherry, 100 Tablets

Solgar B-Complex with Vitamin C Stress Formula, 250 Tablets

Solaray Timed Release Vitamin C with Rose Hip & Acerola, 1,000 mg, 100 Tablets

Blackmores Bio C® 1000, 150 Tablets

Lipo Naturals Liposomal Vitamin C from Sunflowers, 15 oz (443 ml)

Aurora Nutrascience Nano-Liposomal®, Vitamin C, Liposomal Drink Mix, 10 Packets, 0.32 oz (9 g) Each

NutriBiotic Immunity, Ascorbate Bio-C, Vitamin C with Bioflavonoids and Minerals, 16 oz (454 g)

21st Century Vitamin C, Prolonged Release, 1,000 mg, 110 Tablets

Solgar Ester-C® Plus, Vitamin C, 50 Capsules

Solgar Ester-C® Plus, Vitamin C, 500 mg, 250 Vegetable Capsules

Amen Vitamin C, Citrus Bioflavonoids Fruits, Vegan Vitamins Capsules Supplement - 120ct

Metagenics Ultra Potent-C Chewable—Immune & Antioxidant Support, L-Cysteine, L-Lysine, Orange Flavor, Bioflavonoids, 90 Tablets

Absolute Nutrition Liposomal Vitamin C, 60 Capsules

American Biotech Labs Silver Biotics®, Silver Lozenges with Vitamin C, Orange Splash, 21 Lozenges, 3 oz (85 g)

Marlex Ascorbic Acid Vitamin C 500 mg Tablets for Antioxidant and Immune Support, 100 Count

NOW Foods C-1000 Zinc Immune, 180 Veg Capsules

Swanson Vitamin C Zinc & C Lozenge - Orange & Lemon Flavor 200ct

Nature's Truth Vitamin C Bioflavonoids & Rose Hips 1000mg | 100 Caplets

NutriBiotic Immunity, Vitamin C + D3 & Zinc, 250 Capsules

Solgar Vitamin C with Rose Hips, 1,500 mg, 90 Tablets

Solaray Buffered Vitamin C Powder, 8 oz (227 g)

Carlyle Stress B-Complex Vitamin | 180 Vegetarian Caplets | with Vitamin C

Solgar Ester-C® Plus, Vitamin C, 1,000 mg, 180 Tablets