Get Started Free

Cheapest Vitamin C (L-ascorbic acid) on iHerb

Ranked by real cost per 1,000 mg of Vitamin C (L-ascorbic acid) — cheapest value first.

Prices updated Jul 25, 2026 · 25 products · Prices in USD

The priciest option here costs about 11.3× more per 1,000 mg of Vitamin C (L-ascorbic acid) than the best-value pick NutriBiotic. For the same daily dose, choosing by cost per unit instead of sticker price can meaningfully cut your yearly spend.
#ProductDoseServingsPrice (USD)Cost per 1,000 mg
1
NutriBiotic, Immunity, Ascorbic Acid, 100% Pure Vitamin C, Crystalline Powder, 5 lb (2.26 kg)
NutriBiotic, Immunity, Ascorbic Acid, 100% Pure Vitamin C, Crystalline Powder, 5 lb (2.26 kg)
NutriBiotic
2,000 mg113089.240.040View on iHerb →
2
NutriBiotic, Immunity, Ascorbic Acid, 100% Pure Vitamin C, Crystalline Powder, 2.2 lb (1 kg)
NutriBiotic, Immunity, Ascorbic Acid, 100% Pure Vitamin C, Crystalline Powder, 2.2 lb (1 kg)
NutriBiotic
2,000 mg50040.490.041View on iHerb →
3
NutriBiotic, Immunity, Ascorbic Acid, 100% Pure Vitamin C, Crystalline Powder, 16 oz (454 g)
NutriBiotic, Immunity, Ascorbic Acid, 100% Pure Vitamin C, Crystalline Powder, 16 oz (454 g)
NutriBiotic
2,000 mg22719.490.043View on iHerb →
4
NutriBiotic, Immunity, Ascorbic Acid, 100% Pure Vitamin C, Crystalline Powder, 8 oz (227 g)
NutriBiotic, Immunity, Ascorbic Acid, 100% Pure Vitamin C, Crystalline Powder, 8 oz (227 g)
NutriBiotic
2,000 mg11311.240.050View on iHerb →
5
NutriBiotic, Immunity, Ascorbate Bio-C, Vitamin C with Bioflavonoids and Minerals, 2.2 lb (1 kg)
NutriBiotic, Immunity, Ascorbate Bio-C, Vitamin C with Bioflavonoids and Minerals, 2.2 lb (1 kg)
NutriBiotic
1,500 mg40031.790.053View on iHerb →
6
NutriBiotic, Immunity, Ascorbic Acid with Bioflavonoids, 2.2 lb (1 kg)
NutriBiotic, Immunity, Ascorbic Acid with Bioflavonoids, 2.2 lb (1 kg)
NutriBiotic
2,000 mg40044.240.055View on iHerb →
7
NutriBiotic, Immunity, Hypo-Aller C, Vitamin C with Calcium, Magnesium, Potassium & Zinc, 2.2 lb (1 kg)
NutriBiotic, Immunity, Hypo-Aller C, Vitamin C with Calcium, Magnesium, Potassium & Zinc, 2.2 lb (1 kg)
NutriBiotic
1,300 mg40030.300.058View on iHerb →
8
NutriBiotic, Immunity, Ascorbic Acid with Bioflavonoids, Crystalline Powder, 16 oz (454 g)
NutriBiotic, Immunity, Ascorbic Acid with Bioflavonoids, Crystalline Powder, 16 oz (454 g)
NutriBiotic
2,000 mg18121.740.060View on iHerb →
9
NutriBiotic, Immunity, Ascorbate Bio-C, Vitamin C with Bioflavonoids and Minerals, 16 oz (454 g)
NutriBiotic, Immunity, Ascorbate Bio-C, Vitamin C with Bioflavonoids and Minerals, 16 oz (454 g)
NutriBiotic
1,500 mg18116.500.061View on iHerb →
10
NutriBiotic, Immunity, Cherry Electro-C Powder, Cherry, 16 oz (454 g)
NutriBiotic, Immunity, Cherry Electro-C Powder, Cherry, 16 oz (454 g)
NutriBiotic
850 mg36319.120.062View on iHerb →
11
NutriBiotic, Immunity, Vitamin C, 1,000 mg, 500 Capsules
NutriBiotic, Immunity, Vitamin C, 1,000 mg, 500 Capsules
NutriBiotic
1,000 mg50034.120.068View on iHerb →
12
NutriBiotic, Immunity, Vitamin C, 1,000 mg, 500 Vegan Tablets
NutriBiotic, Immunity, Vitamin C, 1,000 mg, 500 Vegan Tablets
NutriBiotic
1,000 mg50034.870.070View on iHerb →
13
NutriBiotic, Immunity, Vitamin C, 1,000 mg, 250 Vegan Tablets
NutriBiotic, Immunity, Vitamin C, 1,000 mg, 250 Vegan Tablets
NutriBiotic
1,000 mg25017.990.072View on iHerb →
14
NutriBiotic, Immunity, Cherry Electro-C Powder, 8 oz (227 g)
NutriBiotic, Immunity, Cherry Electro-C Powder, 8 oz (227 g)
NutriBiotic
850 mg18111.240.073View on iHerb →
15
NutriBiotic, Immunity, Vitamin C, 1,000 mg, 250 Capsules
NutriBiotic, Immunity, Vitamin C, 1,000 mg, 250 Capsules
NutriBiotic
1,000 mg25018.740.075View on iHerb →
16
NutriBiotic, Vitamin C, 1,000 mg, 100 Vegan Tablets
NutriBiotic, Vitamin C, 1,000 mg, 100 Vegan Tablets
NutriBiotic
1,000 mg1007.870.079View on iHerb →
17
Swanson, Vitamin C Powder, with Rose Hips, 8.8 oz (250 g)
Swanson, Vitamin C Powder, with Rose Hips, 8.8 oz (250 g)
Swanson
1,000 mg20017.060.085View on iHerb →
18
NutriBiotic, Immunity, Vitamin C, 1,000 mg, 100 Gluten Free Capsules
NutriBiotic, Immunity, Vitamin C, 1,000 mg, 100 Gluten Free Capsules
NutriBiotic
1,000 mg1008.620.086View on iHerb →
19
NutriBiotic, Immunity, Ascorbate Bio-C Powder, Vitamin C With Bioflavonoids And Minerals, 8 oz (227 g)
NutriBiotic, Immunity, Ascorbate Bio-C Powder, Vitamin C With Bioflavonoids And Minerals, 8 oz (227 g)
NutriBiotic
1,500 mg9011.990.089View on iHerb →
20
NutriBiotic, Immunity, Hypo-Aller C, Vitamin C with Calcium, Magnesium, Potassium & Zinc, 8 oz (227 g)
NutriBiotic, Immunity, Hypo-Aller C, Vitamin C with Calcium, Magnesium, Potassium & Zinc, 8 oz (227 g)
NutriBiotic
1,300 mg9010.490.090View on iHerb →
21
NutriBiotic, Immunity, Buffered Vitamin C With Calcium, Magnesium, Potassium & Zinc, 250 Gluten Free Capsules
NutriBiotic, Immunity, Buffered Vitamin C With Calcium, Magnesium, Potassium & Zinc, 250 Gluten Free Capsules
NutriBiotic
500 mg25017.240.138View on iHerb →
22
NutriBiotic, Immunity, Buffered Vitamin C, 100 Gluten Free Capsules
NutriBiotic, Immunity, Buffered Vitamin C, 100 Gluten Free Capsules
NutriBiotic
500 mg1007.870.157View on iHerb →
23
Bluebonnet Nutrition, Vitamin C-1,000 mg & Rose Hips, 180 Vegetable Capsules
Bluebonnet Nutrition, Vitamin C-1,000 mg & Rose Hips, 180 Vegetable Capsules
Bluebonnet Nutrition
1,000 mg18029.560.164View on iHerb →
24
Solgar, B-Complex with Vitamin C Stress Formula, 250 Tablets
Solgar, B-Complex with Vitamin C Stress Formula, 250 Tablets
Solgar
500 mg12522.400.358View on iHerb →
25
Solgar, B-Complex with Vitamin C Stress Formula, 100 Tablets
Solgar, B-Complex with Vitamin C Stress Formula, 100 Tablets
Solgar
500 mg5011.020.441View on iHerb →

How we rank Vitamin C (L-ascorbic acid)

Two supplements can list the same dose per serving yet cost very differently once you account for how many servings are in the bottle. We calculate the total nutrient in each container (dose per serving × servings per container), divide the current price by that total, and rank by the resulting cost per unit. Lower is better. Because prices are refreshed automatically, this ranking reflects today's iHerb pricing rather than a snapshot from months ago.

Cost per unit is a starting point, not the whole story — the ideal form, third-party testing, and other ingredients matter too. Always check the label and consult a healthcare professional before starting a supplement.

← Browse all nutrients

Prices update automatically and may differ from iHerb at checkout. Rankings are based on cost per unit of the listed nutrient and are for informational purposes only — not medical advice. Links to iHerb are affiliate links.