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Cheapest Calcium (from calcium citrate) on iHerb

Ranked by real cost per 100 mg of Calcium (from calcium citrate) — cheapest value first.

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

The priciest option here costs about 68.7× more per 100 mg of Calcium (from calcium citrate) than the best-value pick Swanson. For the same daily dose, choosing by cost per unit instead of sticker price can meaningfully cut your yearly spend.
#ProductDoseServingsPrice (USD)Cost per 100 mg
1
Swanson, 100% Pure Calcium Citrate Powder, Unflavored, 8 oz (227 g)
Swanson, 100% Pure Calcium Citrate Powder, Unflavored, 8 oz (227 g)
Swanson
350 mg1359.890.021View on iHerb →
2
KAL, Calcium Citrate 1000, 180 Tablets (333 mg per Tablet)
KAL, Calcium Citrate 1000, 180 Tablets (333 mg per Tablet)
KAL
1,000 mg6018.490.031View on iHerb →
3
Swanson, Calcium Citrate & Vitamin D3, 250 Tablets
Swanson, Calcium Citrate & Vitamin D3, 250 Tablets
Swanson
630 mg12524.290.031View on iHerb →
4
KAL, Calcium Citrate D-3, 180 Tablets
KAL, Calcium Citrate D-3, 180 Tablets
KAL
1,000 mg6019.690.033View on iHerb →
5
NOW Foods, Calcium Citrate, 250 Tablets
NOW Foods, Calcium Citrate, 250 Tablets
NOW Foods
600 mg12525.720.034View on iHerb →
6
KAL, Calcium Citrate D-3, 90 Tablets
KAL, Calcium Citrate D-3, 90 Tablets
KAL
1,000 mg3011.290.038View on iHerb →
7
KAL, Calcium Citrate 1000, 90 Tablets (333 mg per Tablet)
KAL, Calcium Citrate 1000, 90 Tablets (333 mg per Tablet)
KAL
1,000 mg3011.590.039View on iHerb →
8
Swanson, Calcium & Vitamin D, 240 Capsules
Swanson, Calcium & Vitamin D, 240 Capsules
Swanson
375 mg8011.990.040View on iHerb →
9
NOW Foods, Calcium Citrate , 100 Tablets
NOW Foods, Calcium Citrate , 100 Tablets
NOW Foods
600 mg5012.240.041View on iHerb →
10
Nutricost, Calcium Citrate, Unflavored, 17.9 oz (500 g)
Nutricost, Calcium Citrate, Unflavored, 17.9 oz (500 g)
Nutricost
650 mg14739.000.041View on iHerb →
11
KAL, Cal-Citrate+, D3 & Magnesium, 240 Tablets
KAL, Cal-Citrate+, D3 & Magnesium, 240 Tablets
KAL
1,000 mg6024.490.041View on iHerb →
12
Swanson, Calcium Citrate Plus Magnesium, 150 Vegan Capsules
Swanson, Calcium Citrate Plus Magnesium, 150 Vegan Capsules
Swanson
300 mg7513.390.060View on iHerb →
13
NOW Foods, Calcium Citrate Caps, 240 Veg Capsules
NOW Foods, Calcium Citrate Caps, 240 Veg Capsules
NOW Foods
450 mg8022.040.061View on iHerb →
14
Solaray, Cal-Mag Citrate with Vitamin D, 2:1 Ratio, 180 Capsules
Solaray, Cal-Mag Citrate with Vitamin D, 2:1 Ratio, 180 Capsules
Solaray
1,000 mg3021.690.072View on iHerb →
15
Solaray, Cal-Mag Citrate with Vitamin D-2, 90 VegCaps
Solaray, Cal-Mag Citrate with Vitamin D-2, 90 VegCaps
Solaray
1,000 mg1512.790.085View on iHerb →
16
KAL, Calcium Citrate+, Mixed Fruit, 60 Chewables
KAL, Calcium Citrate+, Mixed Fruit, 60 Chewables
KAL
500 mg3012.890.086View on iHerb →
17
LifeTime Vitamins, Bone Support, Strawberry, 16 fl oz (473 ml)
LifeTime Vitamins, Bone Support, Strawberry, 16 fl oz (473 ml)
LifeTime Vitamins
600 mg3217.690.092View on iHerb →
18
Carlson, Kid's, Chewable Calcium, Natural Vanilla, 250 mg, 60 Tablets
Carlson, Kid's, Chewable Calcium, Natural Vanilla, 250 mg, 60 Tablets
Carlson
250 mg6016.920.113View on iHerb →
19
Solaray, Calcium Citrate Chewables, Natural Orange, 60 Chewables
Solaray, Calcium Citrate Chewables, Natural Orange, 60 Chewables
Solaray
1,000 mg1517.790.119View on iHerb →
20
Doctor's Best, Women's Multi-Vitamin, 120 Tablets
Doctor's Best, Women's Multi-Vitamin, 120 Tablets
Doctor's Best
130 mg6014.990.192View on iHerb →
21
NOW Foods, Kid Vits™, Grape Splash, 120 Chewable Tablets
NOW Foods, Kid Vits™, Grape Splash, 120 Chewable Tablets
NOW Foods
65 mg6011.010.282View on iHerb →
22
NOW Foods, Kids, Kid Vits™, Juicy Orange, 60 Chewable Tablets
NOW Foods, Kids, Kid Vits™, Juicy Orange, 60 Chewable Tablets
NOW Foods
65 mg306.110.313View on iHerb →
23
Ageless Foundation Laboratories, Kid's Liquid Calcium, 15 Sachets, 0.85 fl oz (25 ml) Each
Ageless Foundation Laboratories, Kid's Liquid Calcium, 15 Sachets, 0.85 fl oz (25 ml) Each
Ageless Foundation Laboratories
300 mg1519.990.444View on iHerb →
24
Swanson, Simply Hydrate, Electrolyte Hydration Mix, Orange, 30 Stick Packs, 0.21 oz (5.84 g) Each
Swanson, Simply Hydrate, Electrolyte Hydration Mix, Orange, 30 Stick Packs, 0.21 oz (5.84 g) Each
Swanson
65 mg3027.491.41View on iHerb →
25
Swanson, Simply Hydrate, Electrolyte Hydration Mix, Raspberry Lemonade, 30 Stick Packs, 0.21 oz (5.95 g) Each
Swanson, Simply Hydrate, Electrolyte Hydration Mix, Raspberry Lemonade, 30 Stick Packs, 0.21 oz (5.95 g) Each
Swanson
65 mg3027.991.44View on iHerb →

How we rank Calcium (from calcium citrate)

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.

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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.